#!/usr/bin/env python3
#
# This is the API builder, it parses the C sources and build the
# API formal description in XML.
#
# See Copyright for the status of this software.
#
# daniel@veillard.com
#
import os, sys
import string
import glob

debug=0
#debugsym='ignorableWhitespaceSAXFunc'
debugsym=None

#
# C parser analysis code
#
ignored_files = {
  "trio": "too many non standard macros",
  "trio.c": "too many non standard macros",
  "trionan.c": "too many non standard macros",
  "triostr.c": "too many non standard macros",
  "config.h": "generated portability layer",
  "libxml.h": "internal only",
  "testOOM.c": "out of memory tester",
  "testOOMlib.h": "out of memory tester",
  "testOOMlib.c": "out of memory tester",
  "rngparser.c": "not yet integrated",
  "testModule.c": "test tool",
  "testThreads.c": "test tool",
  "testapi.c": "generated regression tests",
  "runtest.c": "regression tests program",
  "runsuite.c": "regression tests program",
  "tst.c": "not part of the library",
  "test.c": "not part of the library",
  "testdso.c": "test for dynamid shared libraries",
  "testrecurse.c": "test for entities recursions",
  "timsort.h": "Internal header only for xpath.c 2.9.0",
}

ignored_words = {
  "WINAPI": (0, "Windows keyword"),
  "LIBXML_DLL_IMPORT": (0, "Special macro to flag external keywords"),
  "XMLPUBVAR": (0, "Special macro for extern vars for win32"),
  "XSLTPUBVAR": (0, "Special macro for extern vars for win32"),
  "EXSLTPUBVAR": (0, "Special macro for extern vars for win32"),
  "XMLPUBFUN": (0, "Special macro for extern funcs for win32"),
  "XSLTPUBFUN": (0, "Special macro for extern funcs for win32"),
  "EXSLTPUBFUN": (0, "Special macro for extern funcs for win32"),
  "XSLTCALL": (0, "Special macro for win32 calls"),
  "EXSLTCALL": (0, "Special macro for win32 calls"),
  "__declspec": (3, "Windows keyword"),
  "__stdcall": (0, "Windows keyword"),
  "ATTRIBUTE_UNUSED": (0, "macro keyword"),
  "ATTRIBUTE_DESTRUCTOR": (0, "macro keyword"),
  "LIBEXSLT_PUBLIC": (0, "macro keyword"),
  "X_IN_Y": (5, "macro function builder"),
  "XSLT_ITEM_COMMON_FIELDS": (0, "Special macro"),
  "CALLBACK": (0, "macro keyword"),
  "ATTRIBUTE_ALLOC_SIZE": (3, "macro for gcc checking extension"),
  "ATTRIBUTE_PRINTF": (5, "macro for gcc printf args checking extension"),
  "LIBXML_ATTR_FORMAT": (5, "macro for gcc printf args checking extension"),
  "LIBXML_ATTR_ALLOC_SIZE": (3, "macro for gcc checking extension"),
  "LIBXSLT_ATTR_FORMAT": (5, "macro for gcc printf args checking extension"),
  "ATTRIBUTE_NO_SANITIZE": (3, "macro keyword"),
  "XML_DEPRECATED": (0, "macro keyword"),
}

def escape(raw):
    raw = raw.replace('&', '&amp;')
    raw = raw.replace('<', '&lt;')
    raw = raw.replace('>', '&gt;')
    raw = raw.replace("'", '&apos;')
    raw = raw.replace('"', '&quot;')
    return raw

class identifier:
    def __init__(self, name, header=None, module=None, type=None, lineno = 0,
                 info=None, extra=None, conditionals = None):
        self.name = name
        self.header = header
        self.module = module
        self.type = type
        self.info = info
        self.extra = extra
        self.lineno = lineno
        self.static = 0
        if conditionals == None or len(conditionals) == 0:
            self.conditionals = None
        else:
            self.conditionals = conditionals[:]
        if self.name == debugsym:
            print("=> define %s : %s" % (debugsym, (module, type, info,
                                         extra, conditionals)))

    def __repr__(self):
        r = "%s %s:" % (self.type, self.name)
        if self.static:
            r = r + " static"
        if self.module != None:
            r = r + " from %s" % (self.module)
        if self.info != None:
            r = r + " " +  repr(self.info)
        if self.extra != None:
            r = r + " " + repr(self.extra)
        if self.conditionals != None:
            r = r + " " + repr(self.conditionals)
        return r


    def set_header(self, header):
        self.header = header
    def set_module(self, module):
        self.module = module
    def set_type(self, type):
        self.type = type
    def set_info(self, info):
        self.info = info
    def set_extra(self, extra):
        self.extra = extra
    def set_lineno(self, lineno):
        self.lineno = lineno
    def set_static(self, static):
        self.static = static
    def set_conditionals(self, conditionals):
        if conditionals == None or len(conditionals) == 0:
            self.conditionals = None
        else:
            self.conditionals = conditionals[:]

    def get_name(self):
        return self.name
    def get_header(self):
        return self.module
    def get_module(self):
        return self.module
    def get_type(self):
        return self.type
    def get_info(self):
        return self.info
    def get_lineno(self):
        return self.lineno
    def get_extra(self):
        return self.extra
    def get_static(self):
        return self.static
    def get_conditionals(self):
        return self.conditionals

    def update(self, header, module, type = None, info = None, extra=None,
               conditionals=None):
        if self.name == debugsym:
            print("=> update %s : %s" % (debugsym, (module, type, info,
                                         extra, conditionals)))
        if header != None and self.header == None:
            self.set_header(module)
        if module != None and (self.module == None or self.header == self.module):
            self.set_module(module)
        if type != None and self.type == None:
            self.set_type(type)
        if info != None:
            self.set_info(info)
        if extra != None:
            self.set_extra(extra)
        if conditionals != None:
            self.set_conditionals(conditionals)

class index:
    def __init__(self, name = "noname"):
        self.name = name
        self.identifiers = {}
        self.functions = {}
        self.variables = {}
        self.includes = {}
        self.structs = {}
        self.enums = {}
        self.typedefs = {}
        self.macros = {}
        self.references = {}
        self.info = {}

    def add_ref(self, name, header, module, static, type, lineno, info=None, extra=None, conditionals = None):
        if name[0:2] == '__':
            return None
        d = None
        if name in self.identifiers:
           d = self.identifiers[name]
           d.update(header, module, type, info, extra, conditionals)
        else:
           d = identifier(name, header, module, type, lineno, info, extra, conditionals)
           self.identifiers[name] = d

        if d != None and static == 1:
            d.set_static(1)

        if d != None and name != None and type != None:
            self.references[name] = d

        if name == debugsym:
            print("New ref: %s" % (d))

        return d

    def add(self, name, header, module, static, type, lineno, info=None, extra=None, conditionals = None):
        if name[0:2] == '__':
            return None
        d = None
        if name in self.identifiers:
           d = self.identifiers[name]
           d.update(header, module, type, info, extra, conditionals)
        else:
           d = identifier(name, header, module, type, lineno, info, extra, conditionals)
           self.identifiers[name] = d

        if d != None and static == 1:
            d.set_static(1)

        if d != None and name != None and type != None:
            if type == "function":
                self.functions[name] = d
            elif type == "functype":
                self.functions[name] = d
            elif type == "variable":
                self.variables[name] = d
            elif type == "include":
                self.includes[name] = d
            elif type == "struct":
                self.structs[name] = d
            elif type == "enum":
                self.enums[name] = d
            elif type == "typedef":
                self.typedefs[name] = d
            elif type == "macro":
                self.macros[name] = d
            else:
                print("Unable to register type ", type)

        if name == debugsym:
            print("New symbol: %s" % (d))

        return d

    def merge(self, idx):
        for id in list(idx.functions.keys()):
              #
              # macro might be used to override functions or variables
              # definitions
              #
             if id in self.macros:
                 del self.macros[id]
             if id in self.functions:
                 print("function %s from %s redeclared in %s" % (
                    id, self.functions[id].header, idx.functions[id].header))
             else:
                 self.functions[id] = idx.functions[id]
                 self.identifiers[id] = idx.functions[id]
        for id in list(idx.variables.keys()):
              #
              # macro might be used to override functions or variables
              # definitions
              #
             if id in self.macros:
                 del self.macros[id]
             if id in self.variables:
                 print("variable %s from %s redeclared in %s" % (
                    id, self.variables[id].header, idx.variables[id].header))
             else:
                 self.variables[id] = idx.variables[id]
                 self.identifiers[id] = idx.variables[id]
        for id in list(idx.structs.keys()):
             if id in self.structs:
                 print("struct %s from %s redeclared in %s" % (
                    id, self.structs[id].header, idx.structs[id].header))
             else:
                 self.structs[id] = idx.structs[id]
                 self.identifiers[id] = idx.structs[id]
        for id in list(idx.typedefs.keys()):
             if id in self.typedefs:
                 print("typedef %s from %s redeclared in %s" % (
                    id, self.typedefs[id].header, idx.typedefs[id].header))
             else:
                 self.typedefs[id] = idx.typedefs[id]
                 self.identifiers[id] = idx.typedefs[id]
        for id in list(idx.macros.keys()):
              #
              # macro might be used to override functions or variables
              # definitions
              #
             if id in self.variables:
                 continue
             if id in self.functions:
                 continue
             if id in self.enums:
                 continue
             if id in self.macros:
                 print("macro %s from %s redeclared in %s" % (
                    id, self.macros[id].header, idx.macros[id].header))
             else:
                 self.macros[id] = idx.macros[id]
                 self.identifiers[id] = idx.macros[id]
        for id in list(idx.enums.keys()):
             if id in self.enums:
                 print("enum %s from %s redeclared in %s" % (
                    id, self.enums[id].header, idx.enums[id].header))
             else:
                 self.enums[id] = idx.enums[id]
                 self.identifiers[id] = idx.enums[id]

    def merge_public(self, idx):
        for id in list(idx.functions.keys()):
             if id in self.functions:
                 # check that function condition agrees with header
                 if idx.functions[id].conditionals != \
                    self.functions[id].conditionals:
                     print("Header condition differs from Function for %s:" \
                        % id)
                     print("  H: %s" % self.functions[id].conditionals)
                     print("  C: %s" % idx.functions[id].conditionals)
                 up = idx.functions[id]
                 self.functions[id].update(None, up.module, up.type, up.info, up.extra)
         #     else:
         #         print "Function %s from %s is not declared in headers" % (
         #                id, idx.functions[id].module)

        for id in list(idx.variables.keys()):
            if id in self.variables:
                # check that variable condition agrees with header
                # TODO: produces many false positives
                #if idx.variables[id].conditionals != \
                #   self.variables[id].conditionals:
                #    print("Header condition differs from Variable for %s:" \
                #       % id)
                #    print("  H: %s" % self.variables[id].conditionals)
                #    print("  C: %s" % idx.variables[id].conditionals)
                up = idx.variables[id]
                self.variables[id].update(None, up.module, up.type, up.info, up.extra)

    def analyze_dict(self, type, dict):
        count = 0
        public = 0
        for name in list(dict.keys()):
            id = dict[name]
            count = count + 1
            if id.static == 0:
                public = public + 1
        if count != public:
            print("  %d %s , %d public" % (count, type, public))
        elif count != 0:
            print("  %d public %s" % (count, type))


    def analyze(self):
        self.analyze_dict("functions", self.functions)
        self.analyze_dict("variables", self.variables)
        self.analyze_dict("structs", self.structs)
        self.analyze_dict("typedefs", self.typedefs)
        self.analyze_dict("macros", self.macros)

class CLexer:
    """A lexer for the C language, tokenize the input by reading and
       analyzing it line by line"""
    def __init__(self, input):
        self.input = input
        self.tokens = []
        self.line = ""
        self.lineno = 0

    def getline(self):
        line = ''
        while line == '':
            line = self.input.readline()
            if not line:
                return None
            self.lineno = self.lineno + 1
            line = line.lstrip()
            line = line.rstrip()
            if line == '':
                continue
            while line[-1] == '\\':
                line = line[:-1]
                n = self.input.readline()
                self.lineno = self.lineno + 1
                n = n.lstrip()
                n = n.rstrip()
                if not n:
                    break
                else:
                    line = line + n
        return line

    def getlineno(self):
        return self.lineno

    def push(self, token):
        self.tokens.insert(0, token);

    def debug(self):
        print("Last token: ", self.last)
        print("Token queue: ", self.tokens)
        print("Line %d end: " % (self.lineno), self.line)

    def token(self):
        while self.tokens == []:
            if self.line == "":
                line = self.getline()
            else:
                line = self.line
                self.line = ""
            if line == None:
                return None

            if line[0] == '#':
                self.tokens = list(map((lambda x: ('preproc', x)),
                                  line.split()))
                break;
            l = len(line)
            if line[0] == '"' or line[0] == "'":
                end = line[0]
                line = line[1:]
                found = 0
                tok = ""
                while found == 0:
                    i = 0
                    l = len(line)
                    while i < l:
                        if line[i] == end:
                            self.line = line[i+1:]
                            line = line[:i]
                            l = i
                            found = 1
                            break
                        if line[i] == '\\':
                            i = i + 1
                        i = i + 1
                    tok = tok + line
                    if found == 0:
                        line = self.getline()
                        if line == None:
                            return None
                self.last = ('string', tok)
                return self.last

            if l >= 2 and line[0] == '/' and line[1] == '*':
                line = line[2:]
                found = 0
                tok = ""
                while found == 0:
                    i = 0
                    l = len(line)
                    while i < l:
                        if line[i] == '*' and i+1 < l and line[i+1] == '/':
                            self.line = line[i+2:]
                            line = line[:i-1]
                            l = i
                            found = 1
                            break
                        i = i + 1
                    if tok != "":
                        tok = tok + "\n"
                    tok = tok + line
                    if found == 0:
                        line = self.getline()
                        if line == None:
                            return None
                self.last = ('comment', tok)
                return self.last
            if l >= 2 and line[0] == '/' and line[1] == '/':
                line = line[2:]
                self.last = ('comment', line)
                return self.last
            i = 0
            while i < l:
                if line[i] == '/' and i+1 < l and line[i+1] == '/':
                    self.line = line[i:]
                    line = line[:i]
                    break
                if line[i] == '/' and i+1 < l and line[i+1] == '*':
                    self.line = line[i:]
                    line = line[:i]
                    break
                if line[i] == '"' or line[i] == "'":
                    self.line = line[i:]
                    line = line[:i]
                    break
                i = i + 1
            l = len(line)
            i = 0
            while i < l:
                if line[i] == ' ' or line[i] == '\t':
                    i = i + 1
                    continue
                o = ord(line[i])
                if (o >= 97 and o <= 122) or (o >= 65 and o <= 90) or \
                   (o >= 48 and o <= 57):
                    s = i
                    while i < l:
                        o = ord(line[i])
                        if (o >= 97 and o <= 122) or (o >= 65 and o <= 90) or \
                           (o >= 48 and o <= 57) or \
			   (" \t(){}:;,+-*/%&!|[]=><".find(line[i])) == -1:
                            i = i + 1
                        else:
                            break
                    self.tokens.append(('name', line[s:i]))
                    continue
                if "(){}:;,[]".find(line[i]) != -1:
#                 if line[i] == '(' or line[i] == ')' or line[i] == '{' or \
#                    line[i] == '}' or line[i] == ':' or line[i] == ';' or \
#                    line[i] == ',' or line[i] == '[' or line[i] == ']':
                    self.tokens.append(('sep', line[i]))
                    i = i + 1
                    continue
                if "+-*><=/%&!|.".find(line[i]) != -1:
#                 if line[i] == '+' or line[i] == '-' or line[i] == '*' or \
#                    line[i] == '>' or line[i] == '<' or line[i] == '=' or \
#                    line[i] == '/' or line[i] == '%' or line[i] == '&' or \
#                    line[i] == '!' or line[i] == '|' or line[i] == '.':
                    if line[i] == '.' and  i + 2 < l and \
                       line[i+1] == '.' and line[i+2] == '.':
                        self.tokens.append(('name', '...'))
                        i = i + 3
                        continue

                    j = i + 1
                    if j < l and (
                       "+-*><=/%&!|".find(line[j]) != -1):
#                        line[j] == '+' or line[j] == '-' or line[j] == '*' or \
#                        line[j] == '>' or line[j] == '<' or line[j] == '=' or \
#                        line[j] == '/' or line[j] == '%' or line[j] == '&' or \
#                        line[j] == '!' or line[j] == '|'):
                        self.tokens.append(('op', line[i:j+1]))
                        i = j + 1
                    else:
                        self.tokens.append(('op', line[i]))
                        i = i + 1
                    continue
                s = i
                while i < l:
                    o = ord(line[i])
                    if (o >= 97 and o <= 122) or (o >= 65 and o <= 90) or \
                       (o >= 48 and o <= 57) or (
                        " \t(){}:;,+-*/%&!|[]=><".find(line[i]) == -1):
#                         line[i] != ' ' and line[i] != '\t' and
#                         line[i] != '(' and line[i] != ')' and
#                         line[i] != '{'  and line[i] != '}' and
#                         line[i] != ':' and line[i] != ';' and
#                         line[i] != ',' and line[i] != '+' and
#                         line[i] != '-' and line[i] != '*' and
#                         line[i] != '/' and line[i] != '%' and
#                         line[i] != '&' and line[i] != '!' and
#                         line[i] != '|' and line[i] != '[' and
#                         line[i] != ']' and line[i] != '=' and
#                         line[i] != '*' and line[i] != '>' and
#                         line[i] != '<'):
                        i = i + 1
                    else:
                        break
                self.tokens.append(('name', line[s:i]))

        tok = self.tokens[0]
        self.tokens = self.tokens[1:]
        self.last = tok
        return tok

class CParser:
    """The C module parser"""
    def __init__(self, filename, idx = None):
        self.filename = filename
        if len(filename) > 2 and filename[-2:] == '.h':
            self.is_header = 1
        else:
            self.is_header = 0
        self.input = open(filename)
        self.lexer = CLexer(self.input)
        if idx == None:
            self.index = index()
        else:
            self.index = idx
        self.top_comment = ""
        self.last_comment = ""
        self.comment = None
        self.collect_ref = 0
        self.doc_disable = 0
        self.conditionals = []
        self.defines = []

    def collect_references(self):
        self.collect_ref = 1

    def disable(self):
        self.doc_disable = 1

    def enable(self):
        self.doc_disable = 0

    def lineno(self):
        return self.lexer.getlineno()

    def index_add(self, name, module, static, type, info=None, extra = None):
        if self.doc_disable:
            return
        if self.is_header == 1:
            self.index.add(name, module, module, static, type, self.lineno(),
                           info, extra, self.conditionals)
        else:
            self.index.add(name, None, module, static, type, self.lineno(),
                           info, extra, self.conditionals)

    def index_add_ref(self, name, module, static, type, info=None,
                      extra = None):
        if self.is_header == 1:
            self.index.add_ref(name, module, module, static, type,
                               self.lineno(), info, extra, self.conditionals)
        else:
            self.index.add_ref(name, None, module, static, type, self.lineno(),
                               info, extra, self.conditionals)

    def warning(self, msg):
        if self.doc_disable:
            return
        print(msg)

    def error(self, msg, token=-1):
        if self.doc_disable:
            return

        print("Parse Error: " + msg)
        if token != -1:
            print("Got token ", token)
        self.lexer.debug()
        sys.exit(1)

    def debug(self, msg, token=-1):
        print("Debug: " + msg)
        if token != -1:
            print("Got token ", token)
        self.lexer.debug()

    def parseTopComment(self, comment):
        res = {}
        lines = comment.split("\n")
        item = None
        for line in lines:
            while line != "" and (line[0] == ' ' or line[0] == '\t'):
                line = line[1:]
            while line != "" and line[0] == '*':
                line = line[1:]
            while line != "" and (line[0] == ' ' or line[0] == '\t'):
                line = line[1:]
            try:
                (it, line) = line.split(":", 1)
                item = it
                while line != "" and (line[0] == ' ' or line[0] == '\t'):
                    line = line[1:]
                if item in res:
                    res[item] = res[item] + " " + line
                else:
                    res[item] = line
            except:
                if item != None:
                    if item in res:
                        res[item] = res[item] + " " + line
                    else:
                        res[item] = line
        self.index.info = res

    def parseComment(self, token):
        if self.top_comment == "":
            self.top_comment = token[1]
        if self.comment == None or token[1][0] == '*':
            self.comment = token[1];
        else:
            self.comment = self.comment + token[1]
        token = self.lexer.token()

        if self.comment.find("DOC_DISABLE") != -1:
            self.disable()

        if self.comment.find("DOC_ENABLE") != -1:
            self.enable()

        return token

    #
    # Parse a simple comment block for typedefs or global variables
    #
    def parseSimpleComment(self, name, quiet = False):
        if name[0:2] == '__':
            quiet = 1

        args = []
        desc = ""

        if self.comment == None:
            if not quiet:
                self.warning("Missing comment for %s" % (name))
            return(None)
        if self.comment[0] != '*':
            if not quiet:
                self.warning("Missing * in comment for %s" % (name))
            return(None)
        lines = self.comment.split('\n')
        if lines[0] == '*':
            del lines[0]
        if lines[0] != "* %s:" % (name):
            if not quiet:
                self.warning("Misformatted comment for %s" % (name))
                self.warning("  Expecting '* %s:' got '%s'" % (name, lines[0]))
            return(None)
        del lines[0]
        while len(lines) > 0 and lines[0] == '*':
            del lines[0]
        desc = ""
        while len(lines) > 0:
            l = lines[0]
            while len(l) > 0 and l[0] == '*':
                l = l[1:]
            l = l.strip()
            desc = desc + " " + l
            del lines[0]

        desc = desc.strip()

        if quiet == 0:
            if desc == "":
                self.warning("Comment for %s lacks description" % (name))

        return(desc)
    #
    # Parse a comment block associate to a macro
    #
    def parseMacroComment(self, name, quiet = 0):
        if name[0:2] == '__':
            quiet = 1

        args = []
        desc = ""

        if self.comment == None:
            if not quiet:
                self.warning("Missing comment for macro %s" % (name))
            return((args, desc))
        if self.comment[0] != '*':
            if not quiet:
                self.warning("Missing * in macro comment for %s" % (name))
            return((args, desc))
        lines = self.comment.split('\n')
        if lines[0] == '*':
            del lines[0]
        if lines[0] != "* %s:" % (name):
            if not quiet:
                self.warning("Misformatted macro comment for %s" % (name))
                self.warning("  Expecting '* %s:' got '%s'" % (name, lines[0]))
            return((args, desc))
        del lines[0]
        while lines[0] == '*':
            del lines[0]
        while len(lines) > 0 and lines[0][0:3] == '* @':
            l = lines[0][3:]
            try:
                (arg, desc) = l.split(':', 1)
                desc=desc.strip()
                arg=arg.strip()
            except:
                if not quiet:
                    self.warning("Misformatted macro comment for %s" % (name))
                    self.warning("  problem with '%s'" % (lines[0]))
                del lines[0]
                continue
            del lines[0]
            l = lines[0].strip()
            while len(l) > 2 and l[0:3] != '* @':
                while l[0] == '*':
                    l = l[1:]
                desc = desc + ' ' + l.strip()
                del lines[0]
                if len(lines) == 0:
                    break
                l = lines[0]
            args.append((arg, desc))
        while len(lines) > 0 and lines[0] == '*':
            del lines[0]
        desc = ""
        while len(lines) > 0:
            l = lines[0]
            while len(l) > 0 and l[0] == '*':
                l = l[1:]
            l = l.strip()
            desc = desc + " " + l
            del lines[0]

        desc = desc.strip()

        if quiet == 0:
            if desc == "":
                self.warning("Macro comment for %s lack description of the macro" % (name))

        return((args, desc))

     #
     # Parse a comment block and merge the information found in the
     # parameters descriptions, finally returns a block as complete
     # as possible
     #
    def mergeFunctionComment(self, name, description, quiet = 0):
        if name == 'main':
            quiet = 1
        if name[0:2] == '__':
            quiet = 1

        (ret, args) = description
        desc = ""
        retdesc = ""

        if self.comment == None:
            if not quiet:
                self.warning("Missing comment for function %s" % (name))
            return(((ret[0], retdesc), args, desc))
        if self.comment[0] != '*':
            if not quiet:
                self.warning("Missing * in function comment for %s" % (name))
            return(((ret[0], retdesc), args, desc))
        lines = self.comment.split('\n')
        if lines[0] == '*':
            del lines[0]
        if lines[0] != "* %s:" % (name):
            if not quiet:
                self.warning("Misformatted function comment for %s" % (name))
                self.warning("  Expecting '* %s:' got '%s'" % (name, lines[0]))
            return(((ret[0], retdesc), args, desc))
        del lines[0]
        while lines[0] == '*':
            del lines[0]
        nbargs = len(args)
        while len(lines) > 0 and lines[0][0:3] == '* @':
            l = lines[0][3:]
            try:
                (arg, desc) = l.split(':', 1)
                desc=desc.strip()
                arg=arg.strip()
            except:
                if not quiet:
                    self.warning("Misformatted function comment for %s" % (name))
                    self.warning("  problem with '%s'" % (lines[0]))
                del lines[0]
                continue
            del lines[0]
            l = lines[0].strip()
            while len(l) > 2 and l[0:3] != '* @':
                while l[0] == '*':
                    l = l[1:]
                desc = desc + ' ' + l.strip()
                del lines[0]
                if len(lines) == 0:
                    break
                l = lines[0]
            i = 0
            while i < nbargs:
                if args[i][1] == arg:
                    args[i] = (args[i][0], arg, desc)
                    break;
                i = i + 1
            if i >= nbargs:
                if not quiet:
                    self.warning("Unable to find arg %s from function comment for %s" % (
                       arg, name))
        while len(lines) > 0 and lines[0] == '*':
            del lines[0]
        desc = ""
        while len(lines) > 0:
            l = lines[0]
            while len(l) > 0 and l[0] == '*':
                l = l[1:]
            l = l.strip()
            if len(l) >= 6 and  l[0:6] == "return" or l[0:6] == "Return":
                try:
                    l = l.split(' ', 1)[1]
                except:
                    l = ""
                retdesc = l.strip()
                del lines[0]
                while len(lines) > 0:
                    l = lines[0]
                    while len(l) > 0 and l[0] == '*':
                        l = l[1:]
                    l = l.strip()
                    retdesc = retdesc + " " + l
                    del lines[0]
            else:
                desc = desc + " " + l
                del lines[0]

        retdesc = retdesc.strip()
        desc = desc.strip()

        if quiet == 0:
             #
             # report missing comments
             #
            i = 0
            while i < nbargs:
                if args[i][2] == None and args[i][0] != "void" and \
                   ((args[i][1] != None) or (args[i][1] == '')):
                    self.warning("Function comment for %s lacks description of arg %s" % (name, args[i][1]))
                i = i + 1
            if retdesc == "" and ret[0] != "void":
                self.warning("Function comment for %s lacks description of return value" % (name))
            if desc == "":
                self.warning("Function comment for %s lacks description of the function" % (name))

        return(((ret[0], retdesc), args, desc))

    def parsePreproc(self, token):
        if debug:
            print("=> preproc ", token, self.lexer.tokens)
        name = token[1]
        if name == "#include":
            token = self.lexer.token()
            if token == None:
                return None
            if token[0] == 'preproc':
                self.index_add(token[1], self.filename, not self.is_header,
                                "include")
                return self.lexer.token()
            return token
        if name == "#define":
            token = self.lexer.token()
            if token == None:
                return None
            if token[0] == 'preproc':
                 # TODO macros with arguments
                name = token[1]
                lst = []
                token = self.lexer.token()
                while token != None and token[0] == 'preproc' and \
                      token[1][0] != '#':
                    lst.append(token[1])
                    token = self.lexer.token()
                try:
                    name = name.split('(') [0]
                except:
                    pass
                info = self.parseMacroComment(name, True)
                self.index_add(name, self.filename, not self.is_header,
                                "macro", info)
                return token

        #
        # Processing of conditionals modified by Bill 1/1/05
        #
        # We process conditionals (i.e. tokens from #ifdef, #ifndef,
        # #if, #else and #endif) for headers and mainline code,
        # store the ones from the header in libxml2-api.xml, and later
        # (in the routine merge_public) verify that the two (header and
        # mainline code) agree.
        #
        # There is a small problem with processing the headers. Some of
        # the variables are not concerned with enabling / disabling of
        # library functions (e.g. '__XML_PARSER_H__'), and we don't want
        # them to be included in libxml2-api.xml, or involved in
        # the check between the header and the mainline code.  To
        # accomplish this, we ignore any conditional which doesn't include
        # the string 'ENABLED'
        #
        if name == "#ifdef":
            apstr = self.lexer.tokens[0][1]
            try:
                self.defines.append(apstr)
                if apstr.find('ENABLED') != -1:
                    self.conditionals.append("defined(%s)" % apstr)
            except:
                pass
        elif name == "#ifndef":
            apstr = self.lexer.tokens[0][1]
            try:
                self.defines.append(apstr)
                if apstr.find('ENABLED') != -1:
                    self.conditionals.append("!defined(%s)" % apstr)
            except:
                pass
        elif name == "#if":
            apstr = ""
            for tok in self.lexer.tokens:
                if apstr != "":
                    apstr = apstr + " "
                apstr = apstr + tok[1]
            try:
                self.defines.append(apstr)
                if apstr.find('ENABLED') != -1:
                    self.conditionals.append(apstr)
            except:
                pass
        elif name == "#else":
            if self.conditionals != [] and \
               self.defines[-1].find('ENABLED') != -1:
                self.conditionals[-1] = "!(%s)" % self.conditionals[-1]
        elif name == "#endif":
            if self.conditionals != [] and \
               self.defines[-1].find('ENABLED') != -1:
                self.conditionals = self.conditionals[:-1]
            self.defines = self.defines[:-1]
        token = self.lexer.token()
        while token != None and token[0] == 'preproc' and \
            token[1][0] != '#':
            token = self.lexer.token()
        return token

     #
     # token acquisition on top of the lexer, it handle internally
     # preprocessor and comments since they are logically not part of
     # the program structure.
     #
    def token(self):
        global ignored_words

        token = self.lexer.token()
        while token != None:
            if token[0] == 'comment':
                token = self.parseComment(token)
                continue
            elif token[0] == 'preproc':
                token = self.parsePreproc(token)
                continue
            elif token[0] == "name" and token[1] == "__const":
                token = ("name", "const")
                return token
            elif token[0] == "name" and token[1] == "__attribute":
                token = self.lexer.token()
                while token != None and token[1] != ";":
                    token = self.lexer.token()
                return token
            elif token[0] == "name" and token[1] in ignored_words:
                (n, info) = ignored_words[token[1]]
                i = 0
                while i < n:
                    token = self.lexer.token()
                    i = i + 1
                token = self.lexer.token()
                continue
            else:
                if debug:
                    print("=> ", token)
                return token
        return None

     #
     # Parse a typedef, it records the type and its name.
     #
    def parseTypedef(self, token):
        if token == None:
            return None
        token = self.parseType(token)
        if token == None:
            self.error("parsing typedef")
            return None
        base_type = self.type
        type = base_type
         #self.debug("end typedef type", token)
        while token != None:
            if token[0] == "name":
                name = token[1]
                signature = self.signature
                if signature != None:
                    type = type.split('(')[0]
                    d = self.mergeFunctionComment(name,
                            ((type, None), signature), 1)
                    self.index_add(name, self.filename, not self.is_header,
                                    "functype", d)
                else:
                    if base_type == "struct":
                        self.index_add(name, self.filename, not self.is_header,
                                        "struct", type)
                        base_type = "struct " + name
                    else:
                        # TODO report missing or misformatted comments
                        info = self.parseSimpleComment(name, True)
                        self.index_add(name, self.filename, not self.is_header,
                                    "typedef", type, info)
                token = self.token()
            else:
                self.error("parsing typedef: expecting a name")
                return token
             #self.debug("end typedef", token)
            if token != None and token[0] == 'sep' and token[1] == ',':
                type = base_type
                token = self.token()
                while token != None and token[0] == "op":
                    type = type + token[1]
                    token = self.token()
            elif token != None and token[0] == 'sep' and token[1] == ';':
                break;
            elif token != None and token[0] == 'name':
                type = base_type
                continue;
            else:
                self.error("parsing typedef: expecting ';'", token)
                return token
        token = self.token()
        return token

     #
     # Parse a C code block, used for functions it parse till
     # the balancing } included
     #
    def parseBlock(self, token):
        while token != None:
            if token[0] == "sep" and token[1] == "{":
                token = self.token()
                token = self.parseBlock(token)
            elif token[0] == "sep" and token[1] == "}":
                token = self.token()
                return token
            else:
                if self.collect_ref == 1:
                    oldtok = token
                    token = self.token()
                    if oldtok[0] == "name" and oldtok[1][0:3] == "xml":
                        if token[0] == "sep" and token[1] == "(":
                            self.index_add_ref(oldtok[1], self.filename,
                                                0, "function")
                            token = self.token()
                        elif token[0] == "name":
                            token = self.token()
                            if token[0] == "sep" and (token[1] == ";" or
                               token[1] == "," or token[1] == "="):
                                self.index_add_ref(oldtok[1], self.filename,
                                                    0, "type")
                    elif oldtok[0] == "name" and oldtok[1][0:4] == "XML_":
                        self.index_add_ref(oldtok[1], self.filename,
                                            0, "typedef")
                    elif oldtok[0] == "name" and oldtok[1][0:7] == "LIBXML_":
                        self.index_add_ref(oldtok[1], self.filename,
                                            0, "typedef")

                else:
                    token = self.token()
        return token

     #
     # Parse a C struct definition till the balancing }
     #
    def parseStruct(self, token):
        fields = []
         #self.debug("start parseStruct", token)
        while token != None:
            if token[0] == "sep" and token[1] == "{":
                token = self.token()
                token = self.parseTypeBlock(token)
            elif token[0] == "sep" and token[1] == "}":
                self.struct_fields = fields
                 #self.debug("end parseStruct", token)
                 #print fields
                token = self.token()
                return token
            else:
                base_type = self.type
                 #self.debug("before parseType", token)
                token = self.parseType(token)
                 #self.debug("after parseType", token)
                if token != None and token[0] == "name":
                    fname = token[1]
                    token = self.token()
                    if token[0] == "sep" and token[1] == ";":
                        self.comment = None
                        token = self.token()
                        fields.append((self.type, fname, self.comment))
                        self.comment = None
                    else:
                        self.error("parseStruct: expecting ;", token)
                elif token != None and token[0] == "sep" and token[1] == "{":
                    token = self.token()
                    token = self.parseTypeBlock(token)
                    if token != None and token[0] == "name":
                        token = self.token()
                    if token != None and token[0] == "sep" and token[1] == ";":
                        token = self.token()
                    else:
                        self.error("parseStruct: expecting ;", token)
                else:
                    self.error("parseStruct: name", token)
                    token = self.token()
                self.type = base_type;
        self.struct_fields = fields
         #self.debug("end parseStruct", token)
         #print fields
        return token

     #
     # Parse a C enum block, parse till the balancing }
     #
    def parseEnumBlock(self, token):
        self.enums = []
        name = None
        self.comment = None
        comment = ""
        value = "0"
        while token != None:
            if token[0] == "sep" and token[1] == "{":
                token = self.token()
                token = self.parseTypeBlock(token)
            elif token[0] == "sep" and token[1] == "}":
                if name != None:
                    if self.comment != None:
                        comment = self.comment
                        self.comment = None
                    self.enums.append((name, value, comment))
                token = self.token()
                return token
            elif token[0] == "name":
                    if name != None:
                        if self.comment != None:
                            comment = self.comment.strip()
                            self.comment = None
                        self.enums.append((name, value, comment))
                    name = token[1]
                    comment = ""
                    token = self.token()
                    if token[0] == "op" and token[1][0] == "=":
                        value = ""
                        if len(token[1]) > 1:
                            value = token[1][1:]
                        token = self.token()
                        while token[0] != "sep" or (token[1] != ',' and
                              token[1] != '}'):
                            value = value + token[1]
                            token = self.token()
                    else:
                        try:
                            value = "%d" % (int(value) + 1)
                        except:
                            self.warning("Failed to compute value of enum %s" % (name))
                            value=""
                    if token[0] == "sep" and token[1] == ",":
                        token = self.token()
            else:
                token = self.token()
        return token

     #
     # Parse a C definition block, used for structs it parse till
     # the balancing }
     #
    def parseTypeBlock(self, token):
        while token != None:
            if token[0] == "sep" and token[1] == "{":
                token = self.token()
                token = self.parseTypeBlock(token)
            elif token[0] == "sep" and token[1] == "}":
                token = self.token()
                return token
            else:
                token = self.token()
        return token

     #
     # Parse a type: the fact that the type name can either occur after
     #    the definition or within the definition makes it a little harder
     #    if inside, the name token is pushed back before returning
     #
    def parseType(self, token):
        self.type = ""
        self.struct_fields = []
        self.signature = None
        if token == None:
            return token

        while token[0] == "name" and (
              token[1] == "const" or \
              token[1] == "unsigned" or \
              token[1] == "signed"):
            if self.type == "":
                self.type = token[1]
            else:
                self.type = self.type + " " + token[1]
            token = self.token()

        if token[0] == "name" and (token[1] == "long" or token[1] == "short"):
            if self.type == "":
                self.type = token[1]
            else:
                self.type = self.type + " " + token[1]
            if token[0] == "name" and token[1] == "int":
                if self.type == "":
                    self.type = tmp[1]
                else:
                    self.type = self.type + " " + tmp[1]

        elif token[0] == "name" and token[1] == "struct":
            if self.type == "":
                self.type = token[1]
            else:
                self.type = self.type + " " + token[1]
            token = self.token()
            nametok = None
            if token[0] == "name":
                nametok = token
                token = self.token()
            if token != None and token[0] == "sep" and token[1] == "{":
                token = self.token()
                token = self.parseStruct(token)
            elif token != None and token[0] == "op" and token[1] == "*":
                self.type = self.type + " " + nametok[1] + " *"
                token = self.token()
                while token != None and token[0] == "op" and token[1] == "*":
                    self.type = self.type + " *"
                    token = self.token()
                if token[0] == "name":
                    nametok = token
                    token = self.token()
                else:
                    self.error("struct : expecting name", token)
                    return token
            elif token != None and token[0] == "name" and nametok != None:
                self.type = self.type + " " + nametok[1]
                return token

            if nametok != None:
                self.lexer.push(token)
                token = nametok
            return token

        elif token[0] == "name" and token[1] == "enum":
            if self.type == "":
                self.type = token[1]
            else:
                self.type = self.type + " " + token[1]
            self.enums = []
            token = self.token()
            if token != None and token[0] == "sep" and token[1] == "{":
                token = self.token()
                token = self.parseEnumBlock(token)
            else:
                self.error("parsing enum: expecting '{'", token)
            enum_type = None
            if token != None and token[0] != "name":
                self.lexer.push(token)
                token = ("name", "enum")
            else:
                enum_type = token[1]
            for enum in self.enums:
                self.index_add(enum[0], self.filename,
                               not self.is_header, "enum",
                               (enum[1], enum[2], enum_type))
            return token

        elif token[0] == "name":
            if self.type == "":
                self.type = token[1]
            else:
                self.type = self.type + " " + token[1]
        else:
            self.error("parsing type %s: expecting a name" % (self.type),
                       token)
            return token
        token = self.token()
        while token != None and (token[0] == "op" or
              token[0] == "name" and token[1] == "const"):
            self.type = self.type + " " + token[1]
            token = self.token()

         #
         # if there is a parenthesis here, this means a function type
         #
        if token != None and token[0] == "sep" and token[1] == '(':
            self.type = self.type + token[1]
            token = self.token()
            while token != None and token[0] == "op" and token[1] == '*':
                self.type = self.type + token[1]
                token = self.token()
            if token == None or token[0] != "name" :
                self.error("parsing function type, name expected", token);
                return token
            self.type = self.type + token[1]
            nametok = token
            token = self.token()
            if token != None and token[0] == "sep" and token[1] == ')':
                self.type = self.type + token[1]
                token = self.token()
                if token != None and token[0] == "sep" and token[1] == '(':
                    token = self.token()
                    type = self.type;
                    token = self.parseSignature(token);
                    self.type = type;
                else:
                    self.error("parsing function type, '(' expected", token);
                    return token
            else:
                self.error("parsing function type, ')' expected", token);
                return token
            self.lexer.push(token)
            token = nametok
            return token

         #
         # do some lookahead for arrays
         #
        if token != None and token[0] == "name":
            nametok = token
            token = self.token()
            if token != None and token[0] == "sep" and token[1] == '[':
                self.type = self.type + nametok[1]
                while token != None and token[0] == "sep" and token[1] == '[':
                    self.type = self.type + token[1]
                    token = self.token()
                    while token != None and token[0] != 'sep' and \
                          token[1] != ']' and token[1] != ';':
                        self.type = self.type + token[1]
                        token = self.token()
                if token != None and token[0] == 'sep' and token[1] == ']':
                    self.type = self.type + token[1]
                    token = self.token()
                else:
                    self.error("parsing array type, ']' expected", token);
                    return token
            elif token != None and token[0] == "sep" and token[1] == ':':
                 # remove :12 in case it's a limited int size
                token = self.token()
                token = self.token()
            self.lexer.push(token)
            token = nametok

        return token

     #
     # Parse a signature: '(' has been parsed and we scan the type definition
     #    up to the ')' included
    def parseSignature(self, token):
        signature = []
        if token != None and token[0] == "sep" and token[1] == ')':
            self.signature = []
            token = self.token()
            return token
        while token != None:
            token = self.parseType(token)
            if token != None and token[0] == "name":
                signature.append((self.type, token[1], None))
                token = self.token()
            elif token != None and token[0] == "sep" and token[1] == ',':
                token = self.token()
                continue
            elif token != None and token[0] == "sep" and token[1] == ')':
                 # only the type was provided
                if self.type == "...":
                    signature.append((self.type, "...", None))
                else:
                    signature.append((self.type, None, None))
            if token != None and token[0] == "sep":
                if token[1] == ',':
                    token = self.token()
                    continue
                elif token[1] == ')':
                    token = self.token()
                    break
        self.signature = signature
        return token

     #
     # Parse a global definition, be it a type, variable or function
     # the extern "C" blocks are a bit nasty and require it to recurse.
     #
    def parseGlobal(self, token):
        static = 0
        if token[1] == 'extern':
            token = self.token()
            if token == None:
                return token
            if token[0] == 'string':
                if token[1] == 'C':
                    token = self.token()
                    if token == None:
                        return token
                    if token[0] == 'sep' and token[1] == "{":
                        token = self.token()
#                         print 'Entering extern "C line ', self.lineno()
                        while token != None and (token[0] != 'sep' or
                              token[1] != "}"):
                            if token[0] == 'name':
                                token = self.parseGlobal(token)
                            else:
                                self.error(
                                 "token %s %s unexpected at the top level" % (
                                        token[0], token[1]))
                                token = self.parseGlobal(token)
#                         print 'Exiting extern "C" line', self.lineno()
                        token = self.token()
                        return token
                else:
                    return token
        elif token[1] == 'static':
            static = 1
            token = self.token()
            if token == None or  token[0] != 'name':
                return token

        if token[1] == 'typedef':
            token = self.token()
            return self.parseTypedef(token)
        else:
            token = self.parseType(token)
            type_orig = self.type
        if token == None or token[0] != "name":
            return token
        type = type_orig
        self.name = token[1]
        token = self.token()
        while token != None and (token[0] == "sep" or token[0] == "op"):
            if token[0] == "sep":
                if token[1] == "[":
                    type = type + token[1]
                    token = self.token()
                    while token != None and (token[0] != "sep" or \
                          token[1] != ";"):
                        type = type + token[1]
                        token = self.token()

            if token != None and token[0] == "op" and token[1] == "=":
                 #
                 # Skip the initialization of the variable
                 #
                token = self.token()
                if token[0] == 'sep' and token[1] == '{':
                    token = self.token()
                    token = self.parseBlock(token)
                else:
                    while token != None and (token[0] != "sep" or \
                          (token[1] != ';' and token[1] != ',')):
                            token = self.token()
                if token == None or token[0] != "sep" or (token[1] != ';' and
                   token[1] != ','):
                    self.error("missing ';' or ',' after value")

            if token != None and token[0] == "sep":
                if token[1] == ";":
                    if type == "struct":
                        self.index_add(self.name, self.filename,
                             not self.is_header, "struct", self.struct_fields)
                    else:
                        info = self.parseSimpleComment(self.name, True)
                        self.index_add(self.name, self.filename,
                             not self.is_header, "variable", type, info)
                    self.comment = None
                    token = self.token()
                    break
                elif token[1] == "(":
                    token = self.token()
                    token = self.parseSignature(token)
                    if token == None:
                        return None
                    if token[0] == "sep" and token[1] == ";":
                        d = self.mergeFunctionComment(self.name,
                                ((type, None), self.signature), 1)
                        self.index_add(self.name, self.filename, static,
                                        "function", d)
                        self.comment = None
                        token = self.token()
                    elif token[0] == "sep" and token[1] == "{":
                        d = self.mergeFunctionComment(self.name,
                                ((type, None), self.signature), static)
                        self.index_add(self.name, self.filename, static,
                                        "function", d)
                        self.comment = None
                        token = self.token()
                        token = self.parseBlock(token);
                elif token[1] == ',':
                    self.index_add(self.name, self.filename, static,
                                    "variable", type)
                    self.comment = None
                    type = type_orig
                    token = self.token()
                    while token != None and token[0] == "sep":
                        type = type + token[1]
                        token = self.token()
                    if token != None and token[0] == "name":
                        self.name = token[1]
                        token = self.token()
                else:
                    break

        return token

    def parse(self):
        self.warning("Parsing %s" % (self.filename))
        token = self.token()
        while token != None:
            if token[0] == 'name':
                token = self.parseGlobal(token)
            else:
                self.error("token %s %s unexpected at the top level" % (
                       token[0], token[1]))
                token = self.parseGlobal(token)
                return
        self.parseTopComment(self.top_comment)
        return self.index


class docBuilder:
    """A documentation builder"""
    def __init__(self, name, directories=['.'], excludes=[]):
        self.name = name
        self.directories = directories
        self.excludes = excludes + list(ignored_files.keys())
        self.modules = {}
        self.headers = {}
        self.idx = index()
        self.index = {}
        if name == 'libxml2':
            self.basename = 'libxml'
        else:
            self.basename = name
        self.outdir = None

    def analyze(self):
        print("Project %s : %d headers, %d modules" % (self.name, len(list(self.headers.keys())), len(list(self.modules.keys()))))
        self.idx.analyze()

    def scanHeaders(self):
        for header in list(self.headers.keys()):
            parser = CParser(header)
            idx = parser.parse()
            self.headers[header] = idx;
            self.idx.merge(idx)

    def scanModules(self):
        for module in list(self.modules.keys()):
            parser = CParser(module)
            idx = parser.parse()
            # idx.analyze()
            self.modules[module] = idx
            self.idx.merge_public(idx)

    def scan(self):
        for directory in self.directories:
            files = glob.glob(directory + "/*.c")
            for file in files:
                skip = 0
                for excl in self.excludes:
                    if file.find(excl) != -1:
                        print("Skipping %s" % file)
                        skip = 1
                        break
                if skip == 0:
                    self.modules[file] = None;
            files = glob.glob(directory + "/*.h")
            for file in files:
                skip = 0
                for excl in self.excludes:
                    if file.find(excl) != -1:
                        print("Skipping %s" % file)
                        skip = 1
                        break
                if skip == 0:
                    self.headers[file] = None;
        self.scanHeaders()
        self.scanModules()

    def modulename_file(self, file):
        module = os.path.basename(file)
        if module[-2:] == '.h':
            module = module[:-2]
        elif module[-2:] == '.c':
            module = module[:-2]
        return module

    def serialize_enum(self, output, name):
        id = self.idx.enums[name]
        output.write("    <enum name='%s' file='%s'" % (name,
                     self.modulename_file(id.header)))
        if id.info != None:
            info = id.info
            if info[0] != None and info[0] != '':
                try:
                    val = eval(info[0])
                except:
                    val = info[0]
                output.write(" value='%s'" % (val));
            if info[2] != None and info[2] != '':
                output.write(" type='%s'" % info[2]);
            if info[1] != None and info[1] != '':
                output.write(" info='%s'" % escape(info[1]));
        output.write("/>\n")

    def serialize_macro(self, output, name):
        id = self.idx.macros[name]
        output.write("    <macro name='%s' file='%s'>\n" % (name,
                     self.modulename_file(id.header)))
        if id.info != None:
            try:
                (args, desc) = id.info
                if desc != None and desc != "":
                    output.write("      <info>%s</info>\n" % (escape(desc)))
                for arg in args:
                    (name, desc) = arg
                    if desc != None and desc != "":
                        output.write("      <arg name='%s' info='%s'/>\n" % (
                                     name, escape(desc)))
                    else:
                        output.write("      <arg name='%s'/>\n" % (name))
            except:
                pass
        output.write("    </macro>\n")

    def serialize_typedef(self, output, name):
        id = self.idx.typedefs[name]
        if id.info[0:7] == 'struct ':
            output.write("    <struct name='%s' file='%s' type='%s'" % (
                     name, self.modulename_file(id.header), id.info))
            name = id.info[7:]
            if name in self.idx.structs and ( \
               type(self.idx.structs[name].info) == type(()) or
                type(self.idx.structs[name].info) == type([])):
                output.write(">\n");
                try:
                    for field in self.idx.structs[name].info:
                        desc = field[2]
                        if desc == None:
                            desc = ''
                        else:
                            desc = escape(desc)
                        output.write("      <field name='%s' type='%s' info='%s'/>\n" % (field[1] , field[0], desc))
                except:
                    print("Failed to serialize struct %s" % (name))
                output.write("    </struct>\n")
            else:
                output.write("/>\n");
        else :
            output.write("    <typedef name='%s' file='%s' type='%s'" % (
                         name, self.modulename_file(id.header), id.info))
            try:
                desc = id.extra
                if desc != None and desc != "":
                    output.write(">\n      <info>%s</info>\n" % (escape(desc)))
                    output.write("    </typedef>\n")
                else:
                    output.write("/>\n")
            except:
                output.write("/>\n")

    def serialize_variable(self, output, name):
        id = self.idx.variables[name]
        if id.info != None:
            output.write("    <variable name='%s' file='%s' type='%s'" % (
                    name, self.modulename_file(id.header), id.info))
        else:
            output.write("    <variable name='%s' file='%s'" % (
                    name, self.modulename_file(id.header)))
        desc = id.extra
        if desc != None and desc != "":
            output.write(">\n      <info>%s</info>\n" % (escape(desc)))
            output.write("    </variable>\n")
        else:
            output.write("/>\n")

    def serialize_function(self, output, name):
        id = self.idx.functions[name]
        if name == debugsym:
            print("=>", id)

        output.write("    <%s name='%s' file='%s' module='%s'>\n" % (id.type,
                     name, self.modulename_file(id.header),
                     self.modulename_file(id.module)))
        #
        # Processing of conditionals modified by Bill 1/1/05
        #
        if id.conditionals != None:
            apstr = ""
            for cond in id.conditionals:
                if apstr != "":
                    apstr = apstr + " &amp;&amp; "
                apstr = apstr + cond
            output.write("      <cond>%s</cond>\n"% (apstr));
        try:
            (ret, params, desc) = id.info
            if (desc == None or desc == '') and \
               name[0:9] != "xmlThrDef" and name != "xmlDllMain":
                print("%s %s from %s has no description" % (id.type, name,
                       self.modulename_file(id.module)))

            output.write("      <info>%s</info>\n" % (escape(desc)))
            if ret[0] != None:
                if ret[0] == "void":
                    output.write("      <return type='void'/>\n")
                else:
                    output.write("      <return type='%s' info='%s'/>\n" % (
                             ret[0], escape(ret[1])))
            for param in params:
                if param[0] == 'void':
                    continue
                if param[2] == None:
                    output.write("      <arg name='%s' type='%s' info=''/>\n" % (param[1], param[0]))
                else:
                    output.write("      <arg name='%s' type='%s' info='%s'/>\n" % (param[1], param[0], escape(param[2])))
        except:
            print("Failed to save function %s info: " % name, repr(id.info))
        output.write("    </%s>\n" % (id.type))

    def serialize_exports(self, output, file):
        module = self.modulename_file(file)
        output.write("    <file name='%s'>\n" % (module))
        dict = self.headers[file]
        if dict.info != None:
            for data in ('Summary', 'Description', 'Author'):
                try:
                    output.write("     <%s>%s</%s>\n" % (
                                 data.lower(),
                                 escape(dict.info[data]),
                                 data.lower()))
                except:
                    print("Header %s lacks a %s description" % (module, data))
            if 'Description' in dict.info:
                desc = dict.info['Description']
                if desc.find("DEPRECATED") != -1:
                    output.write("     <deprecated/>\n")

        ids = list(dict.macros.keys())
        ids.sort()
        for id in ids:
            # Macros are sometime used to masquerade other types.
            if id in dict.functions:
                continue
            if id in dict.variables:
                continue
            if id in dict.typedefs:
                continue
            if id in dict.structs:
                continue
            if id in dict.enums:
                continue
            output.write("     <exports symbol='%s' type='macro'/>\n" % (id))
        ids = list(dict.enums.keys())
        ids.sort()
        for id in ids:
            output.write("     <exports symbol='%s' type='enum'/>\n" % (id))
        ids = list(dict.typedefs.keys())
        ids.sort()
        for id in ids:
            output.write("     <exports symbol='%s' type='typedef'/>\n" % (id))
        ids = list(dict.structs.keys())
        ids.sort()
        for id in ids:
            output.write("     <exports symbol='%s' type='struct'/>\n" % (id))
        ids = list(dict.variables.keys())
        ids.sort()
        for id in ids:
            output.write("     <exports symbol='%s' type='variable'/>\n" % (id))
        ids = list(dict.functions.keys())
        ids.sort()
        for id in ids:
            output.write("     <exports symbol='%s' type='function'/>\n" % (id))
        output.write("    </file>\n")

    def serialize(self):
        filename = "%s-api.xml" % self.name
        if self.outdir:
            filename = "%s/%s" % (self.outdir, filename)
        print("Saving XML description %s" % (filename))
        output = open(filename, "w")
        output.write('<?xml version="1.0" encoding="ISO-8859-1"?>\n')
        output.write("<api name='%s'>\n" % self.name)
        output.write("  <files>\n")
        headers = list(self.headers.keys())
        headers.sort()
        for file in headers:
            self.serialize_exports(output, file)
        output.write("  </files>\n")
        output.write("  <symbols>\n")
        macros = list(self.idx.macros.keys())
        macros.sort()
        for macro in macros:
            self.serialize_macro(output, macro)
        enums = list(self.idx.enums.keys())
        enums.sort()
        for enum in enums:
            self.serialize_enum(output, enum)
        typedefs = list(self.idx.typedefs.keys())
        typedefs.sort()
        for typedef in typedefs:
            self.serialize_typedef(output, typedef)
        variables = list(self.idx.variables.keys())
        variables.sort()
        for variable in variables:
            self.serialize_variable(output, variable)
        functions = list(self.idx.functions.keys())
        functions.sort()
        for function in functions:
            self.serialize_function(output, function)
        output.write("  </symbols>\n")
        output.write("</api>\n")
        output.close()


def rebuild():
    builder = None
    if glob.glob("parser.c") != [] :
        print("Rebuilding API description for libxml2")
        builder = docBuilder("libxml2", [".", "."],
                             ["tst.c"])
    elif glob.glob("../parser.c") != [] :
        print("Rebuilding API description for libxml2")
        builder = docBuilder("libxml2", ["..", "../include/libxml"],
                             ["tst.c"])
    elif glob.glob("../libxslt/transform.c") != [] :
        print("Rebuilding API description for libxslt")
        builder = docBuilder("libxslt", ["../libxslt"],
                             ["win32config.h", "libxslt.h", "tst.c"])
    else:
        print("rebuild() failed, unable to guess the module")
        return None
    builder.scan()
    builder.analyze()
    builder.serialize()
    if glob.glob("../libexslt/exslt.c") != [] :
        extra = docBuilder("libexslt", ["../libexslt"], ["libexslt.h"])
        extra.outdir = "EXSLT"
        extra.scan()
        extra.analyze()
        extra.serialize()
    return builder

#
# for debugging the parser
#
def parse(filename):
    parser = CParser(filename)
    idx = parser.parse()
    return idx

if __name__ == "__main__":
    if len(sys.argv) > 1:
        debug = 1
        parse(sys.argv[1])
    else:
        rebuild()
