skamonkey@3513: /**
skamonkey@3513: * vim: set ts=4 :
skamonkey@3513: * =============================================================================
skamonkey@3513: * SourceMod
skamonkey@3513: * Copyright (C) 2004-2008 AlliedModders LLC. All rights reserved.
skamonkey@3513: * =============================================================================
skamonkey@3513: *
skamonkey@3513: * This program is free software; you can redistribute it and/or modify it under
skamonkey@3513: * the terms of the GNU General Public License, version 3.0, as published by the
skamonkey@3513: * Free Software Foundation.
skamonkey@3513: *
skamonkey@3513: * This program is distributed in the hope that it will be useful, but WITHOUT
skamonkey@3513: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
skamonkey@3513: * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
skamonkey@3513: * details.
skamonkey@3513: *
skamonkey@3513: * You should have received a copy of the GNU General Public License along with
skamonkey@3513: * this program. If not, see .
skamonkey@3513: *
skamonkey@3513: * As a special exception, AlliedModders LLC gives you permission to link the
skamonkey@3513: * code of this program (as well as its derivative works) to "Half-Life 2," the
skamonkey@3513: * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
skamonkey@3513: * by the Valve Corporation. You must obey the GNU General Public License in
skamonkey@3513: * all respects for all other code used. Additionally, AlliedModders LLC grants
skamonkey@3513: * this exception to all derivative works. AlliedModders LLC defines further
skamonkey@3513: * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
skamonkey@3513: * or .
skamonkey@3513: *
skamonkey@3513: * Version: $Id$
skamonkey@3513: */
skamonkey@3513:
skamonkey@3513: #include
skamonkey@3513: #include
skamonkey@3513: #include
skamonkey@3513: #include
skamonkey@3513: #include
skamonkey@3513: #include
skamonkey@3513: #include "TextParsers.h"
skamonkey@3513: //#include "ShareSys.h"
skamonkey@3513: //#include "sm_stringutil.h"
skamonkey@3513: //#include "LibrarySys.h"
skamonkey@3513:
skamonkey@3513: TextParsers g_TextParser;
skamonkey@3513: ITextParsers *textparsers = &g_TextParser;
skamonkey@3513:
skamonkey@3513: static int g_ini_chartable1[255] = {0};
skamonkey@3513: static int g_ws_chartable[255] = {0};
skamonkey@3513:
skamonkey@3513: bool TextParsers::IsWhitespace(const char *stream)
skamonkey@3513: {
skamonkey@3513: return g_ws_chartable[(unsigned)*stream] == 1;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: TextParsers::TextParsers()
skamonkey@3513: {
skamonkey@3513: g_ini_chartable1[(unsigned)'_'] = 1;
skamonkey@3513: g_ini_chartable1[(unsigned)'-'] = 1;
skamonkey@3513: g_ini_chartable1[(unsigned)','] = 1;
skamonkey@3513: g_ini_chartable1[(unsigned)'+'] = 1;
skamonkey@3513: g_ini_chartable1[(unsigned)'.'] = 1;
skamonkey@3513: g_ini_chartable1[(unsigned)'$'] = 1;
skamonkey@3513: g_ini_chartable1[(unsigned)'?'] = 1;
skamonkey@3513: g_ini_chartable1[(unsigned)'/'] = 1;
skamonkey@3513: g_ws_chartable[(unsigned)'\n'] = 1;
skamonkey@3513: g_ws_chartable[(unsigned)'\v'] = 1;
skamonkey@3513: g_ws_chartable[(unsigned)'\r'] = 1;
skamonkey@3513: g_ws_chartable[(unsigned)'\t'] = 1;
skamonkey@3513: g_ws_chartable[(unsigned)'\f'] = 1;
skamonkey@3513: g_ws_chartable[(unsigned)' '] = 1;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: unsigned int TextParsers::GetUTF8CharBytes(const char *stream)
skamonkey@3513: {
skamonkey@3513: return _GetUTF8CharBytes(stream);
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: /**
skamonkey@3513: * File streams
skamonkey@3513: */
skamonkey@3513:
skamonkey@3513: bool FileStreamReader(void *stream, char *buffer, size_t maxlength, unsigned int *read)
skamonkey@3513: {
skamonkey@3513: size_t num = fread(buffer, 1, maxlength, (FILE *)stream);
skamonkey@3513:
skamonkey@3513: *read = static_cast(num);
skamonkey@3513:
skamonkey@3513: if (num == 0 && feof((FILE *)stream))
skamonkey@3513: {
skamonkey@3513: return true;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: return (ferror((FILE *)stream) == 0);
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: SMCError TextParsers::ParseFile_SMC(const char *file, ITextListener_SMC *smc, SMCStates *states)
skamonkey@3513: {
skamonkey@3513: FILE *fp = fopen(file, "rt");
skamonkey@3513:
skamonkey@3513: if (!fp)
skamonkey@3513: {
skamonkey@3513: if (states != NULL)
skamonkey@3513: {
skamonkey@3513: states->line = 0;
skamonkey@3513: states->col = 0;
skamonkey@3513: }
skamonkey@3513: return SMCError_StreamOpen;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: SMCError result = ParseStream_SMC(fp, FileStreamReader, smc, states);
skamonkey@3513:
skamonkey@3513: fclose(fp);
skamonkey@3513:
skamonkey@3513: return result;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: SMCError TextParsers::ParseSMCFile(const char *file,
skamonkey@3513: ITextListener_SMC *smc_listener,
skamonkey@3513: SMCStates *states,
skamonkey@3513: char *buffer,
skamonkey@3513: size_t maxsize)
skamonkey@3513: {
skamonkey@3513: const char *errstr;
skamonkey@3513: FILE *fp = fopen(file, "rt");
skamonkey@3513:
skamonkey@3513: if (fp == NULL)
skamonkey@3513: {
skamonkey@3513: char error[256] = "unknown";
skamonkey@3513: if (states != NULL)
skamonkey@3513: {
skamonkey@3513: states->line = 0;
skamonkey@3513: states->col = 0;
skamonkey@3513: }
skamonkey@3513: //g_LibSys.GetPlatformError(error, sizeof(error));
skamonkey@3513: UTIL_Format(buffer, maxsize, "File could not be opened: %s", error);
skamonkey@3513: return SMCError_StreamOpen;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: SMCError result = ParseStream_SMC(fp, FileStreamReader, smc_listener, states);
skamonkey@3513:
skamonkey@3513: fclose(fp);
skamonkey@3513:
skamonkey@3513: errstr = GetSMCErrorString(result);
skamonkey@3513: UTIL_Format(buffer, maxsize, "%s", errstr != NULL ? errstr : "Unknown error");
skamonkey@3513:
skamonkey@3513: return result;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: struct RawStream
skamonkey@3513: {
skamonkey@3513: const char *stream;
skamonkey@3513: size_t length;
skamonkey@3513: size_t pos;
skamonkey@3513: };
skamonkey@3513:
skamonkey@3513: bool RawStreamReader(void *stream, char *buffer, size_t maxlength, unsigned int *read)
skamonkey@3513: {
skamonkey@3513: RawStream *rs = (RawStream *)stream;
skamonkey@3513:
skamonkey@3513: if (rs->pos >= rs->length)
skamonkey@3513: {
skamonkey@3513: return false;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: size_t remaining = rs->length - rs->pos;
skamonkey@3513:
skamonkey@3513: /* Use the smaller of the two */
skamonkey@3513: size_t copy = (remaining > maxlength) ? maxlength : remaining;
skamonkey@3513:
skamonkey@3513: memcpy(buffer, &rs->stream[rs->pos], copy);
skamonkey@3513: rs->pos += copy;
skamonkey@3513: *read = copy;
skamonkey@3513: assert(rs->pos <= rs->length);
skamonkey@3513:
skamonkey@3513: return true;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: SMCError TextParsers::ParseSMCStream(const char *stream,
skamonkey@3513: size_t length,
skamonkey@3513: ITextListener_SMC *smc_listener,
skamonkey@3513: SMCStates *states,
skamonkey@3513: char *buffer,
skamonkey@3513: size_t maxsize)
skamonkey@3513: {
skamonkey@3513: RawStream rs;
skamonkey@3513: SMCError result;
skamonkey@3513:
skamonkey@3513: rs.stream = stream;
skamonkey@3513: rs.length = length;
skamonkey@3513: rs.pos = 0;
skamonkey@3513:
skamonkey@3513: result = ParseStream_SMC(&rs, RawStreamReader, smc_listener, states);
skamonkey@3513:
skamonkey@3513: const char *errstr = GetSMCErrorString(result);
skamonkey@3513: UTIL_Format(buffer, maxsize, "%s", errstr != NULL ? errstr : "Unknown error");
skamonkey@3513:
skamonkey@3513: return result;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: /**
skamonkey@3513: * Raw parsing of streams with helper functions
skamonkey@3513: */
skamonkey@3513:
skamonkey@3513: struct StringInfo
skamonkey@3513: {
skamonkey@3513: StringInfo() : quoted(false), ptr(NULL), end(NULL), special(false) { }
skamonkey@3513: bool quoted;
skamonkey@3513: char *ptr;
skamonkey@3513: char *end;
skamonkey@3513: bool special;
skamonkey@3513: };
skamonkey@3513:
skamonkey@3513: const char *FixupString(StringInfo &data)
skamonkey@3513: {
skamonkey@3513: if (!data.ptr)
skamonkey@3513: {
skamonkey@3513: return NULL;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: if (data.quoted)
skamonkey@3513: {
skamonkey@3513: data.ptr++;
skamonkey@3513: }
skamonkey@3513: #if defined _DEBUG
skamonkey@3513: else {
skamonkey@3513: /* A string will never have beginning whitespace because we ignore it in the stream.
skamonkey@3513: * Furthermore, if there is trailing whitespace, the end ptr will point to it, so it is valid
skamonkey@3513: * to overwrite! Lastly, the last character must be whitespace or a comment/invalid character.
skamonkey@3513: */
skamonkey@3513: }
skamonkey@3513: #endif
skamonkey@3513:
skamonkey@3513: /* Do some extra work on strings that have special quoted characters. */
skamonkey@3513: if (data.special)
skamonkey@3513: {
skamonkey@3513: char *outptr = data.ptr;
skamonkey@3513: size_t len = data.end - data.ptr;
skamonkey@3513: if (len >= 2)
skamonkey@3513: {
skamonkey@3513: for (size_t i=0; i=0; i--)
skamonkey@3513: {
skamonkey@3513: if (info[i].ptr)
skamonkey@3513: {
skamonkey@3513: return info[i].ptr;
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: return NULL;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: SMCError TextParsers::ParseStream_SMC(void *stream,
skamonkey@3513: STREAMREADER srdr,
skamonkey@3513: ITextListener_SMC *smc,
skamonkey@3513: SMCStates *pStates)
skamonkey@3513: {
skamonkey@3513: char *reparse_point = NULL;
skamonkey@3513: char in_buf[4096];
skamonkey@3513: char *parse_point = in_buf;
skamonkey@3513: char *line_begin = in_buf;
skamonkey@3513: unsigned int read;
skamonkey@3513: unsigned int curlevel = 0;
skamonkey@3513: bool in_quote = false;
skamonkey@3513: bool ignoring = false;
skamonkey@3513: bool eol_comment = false;
skamonkey@3513: bool ml_comment = false;
skamonkey@3513: unsigned int i;
skamonkey@3513: SMCError err = SMCError_Okay;
skamonkey@3513: SMCResult res;
skamonkey@3513: SMCStates states;
skamonkey@3513: char c;
skamonkey@3513:
skamonkey@3513: StringInfo strings[3];
skamonkey@3513: StringInfo emptystring;
skamonkey@3513:
skamonkey@3513: states.line = 1;
skamonkey@3513: states.col = 0;
skamonkey@3513:
skamonkey@3513: smc->ReadSMC_ParseStart();
skamonkey@3513:
skamonkey@3513: /**
skamonkey@3513: * The stream reader reads in as much as it can fill the buffer with.
skamonkey@3513: * It then processes the buffer. If the buffer cannot be fully processed, for example,
skamonkey@3513: * a line is left hanging with no newline, then the contents of the buffer is shifted
skamonkey@3513: * down, and the buffer is filled from the stream reader again.
skamonkey@3513: *
skamonkey@3513: * What makes this particularly annoying is that we cache pointers everywhere, so when
skamonkey@3513: * the shifting process takes place, all those pointers must be shifted as well.
skamonkey@3513: */
skamonkey@3513: while (srdr(stream, parse_point, sizeof(in_buf) - (parse_point - in_buf) - 1, &read))
skamonkey@3513: {
skamonkey@3513: if (!read)
skamonkey@3513: {
skamonkey@3513: break;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: /* Check for BOM markings, which is only relevant on the first line.
skamonkey@3513: * Not worth it, but it could be moved out of the loop.
skamonkey@3513: */
skamonkey@3513: if (states.line == 1 &&
skamonkey@3513: in_buf[0] == (char)0xEF &&
skamonkey@3513: in_buf[1] == (char)0xBB &&
skamonkey@3513: in_buf[2] == (char)0xBF)
skamonkey@3513: {
skamonkey@3513: /* Move EVERYTHING down :\ */
skamonkey@3513: memmove(in_buf, &in_buf[3], read - 3);
skamonkey@3513: read -= 3;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: if (reparse_point)
skamonkey@3513: {
skamonkey@3513: read += (parse_point - reparse_point);
skamonkey@3513: parse_point = reparse_point;
skamonkey@3513: reparse_point = NULL;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: for (i=0; iReadSMC_RawLine(&states, line_begin)) != SMCResult_Continue)
skamonkey@3513: {
skamonkey@3513: err = (res == SMCResult_HaltFail) ? SMCError_Custom : SMCError_Okay;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: parse_point[i] = '\n';
skamonkey@3513:
skamonkey@3513: /* Now we check the sanity of our staged strings! */
skamonkey@3513: if (strings[2].ptr)
skamonkey@3513: {
skamonkey@3513: if (!curlevel)
skamonkey@3513: {
skamonkey@3513: err = SMCError_InvalidProperty1;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: /* Assume the next string is a property and pass the info on. */
skamonkey@3513: if ((res=smc->ReadSMC_KeyValue(
skamonkey@3513: &states,
skamonkey@3513: FixupString(strings[2]),
skamonkey@3513: FixupString(strings[1]))) != SMCResult_Continue)
skamonkey@3513: {
skamonkey@3513: err = (res == SMCResult_HaltFail) ? SMCError_Custom : SMCError_Okay;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: scrap(strings);
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: /* Change the states for the next line */
skamonkey@3513: states.col = 0;
skamonkey@3513: states.line++;
skamonkey@3513: line_begin = &parse_point[i+1]; //Note: safe because this gets relocated later
skamonkey@3513: }
skamonkey@3513: else if (ignoring)
skamonkey@3513: {
skamonkey@3513: if (in_quote)
skamonkey@3513: {
skamonkey@3513: /* If i was 0, we could have reparsed, so make sure there's no buffer underrun */
skamonkey@3513: if ((&parse_point[i] != in_buf) && c == '"' && parse_point[i-1] != '\\')
skamonkey@3513: {
skamonkey@3513: /* If we reached a quote in an ignore phase,
skamonkey@3513: * we're staging a string and we must rotate it out.
skamonkey@3513: */
skamonkey@3513: in_quote = false;
skamonkey@3513: ignoring = false;
skamonkey@3513: /* Set our info */
skamonkey@3513: strings[0].end = &parse_point[i];
skamonkey@3513: strings[0].quoted = true;
skamonkey@3513: if (rotate(strings) != NULL)
skamonkey@3513: {
skamonkey@3513: /* If we rotated too many strings, there was too much crap on one line */
skamonkey@3513: err = SMCError_InvalidTokens;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: else if (c == '\\')
skamonkey@3513: {
skamonkey@3513: strings[0].special = true;
skamonkey@3513: if (i == (read - 1))
skamonkey@3513: {
skamonkey@3513: reparse_point = &parse_point[i];
skamonkey@3513: break;
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: else if (ml_comment)
skamonkey@3513: {
skamonkey@3513: if (c == '*')
skamonkey@3513: {
skamonkey@3513: /* Check if we need to get more input first */
skamonkey@3513: if (i == read - 1)
skamonkey@3513: {
skamonkey@3513: reparse_point = &parse_point[i];
skamonkey@3513: break;
skamonkey@3513: }
skamonkey@3513: if (parse_point[i+1] == '/')
skamonkey@3513: {
skamonkey@3513: ml_comment = false;
skamonkey@3513: ignoring = false;
skamonkey@3513: /* We should not be staging anything right now. */
skamonkey@3513: assert(strings[0].ptr == NULL);
skamonkey@3513: /* Advance the input stream so we don't choke on this token */
skamonkey@3513: i++;
skamonkey@3513: states.col++;
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: else
skamonkey@3513: {
skamonkey@3513: /* Check if we're whitespace or not */
skamonkey@3513: if (!g_ws_chartable[(unsigned)c])
skamonkey@3513: {
skamonkey@3513: bool restage = false;
skamonkey@3513: /* Check various special tokens:
skamonkey@3513: * ;
skamonkey@3513: * //
skamonkey@3513: * / *
skamonkey@3513: * {
skamonkey@3513: * }
skamonkey@3513: */
skamonkey@3513: if (c == ';' || c == '/')
skamonkey@3513: {
skamonkey@3513: /* If it's a line-based comment (that is, ; or //)
skamonkey@3513: * we will need to scrap everything until the end of the line.
skamonkey@3513: */
skamonkey@3513: if (c == '/')
skamonkey@3513: {
skamonkey@3513: if (i == read - 1)
skamonkey@3513: {
skamonkey@3513: /* If we reached the end of the look-ahead, we need to re-check our input.
skamonkey@3513: * Breaking out will force this to be the new reparse point!
skamonkey@3513: */
skamonkey@3513: reparse_point = &parse_point[i];
skamonkey@3513: break;
skamonkey@3513: }
skamonkey@3513: if (parse_point[i + 1] == '/')
skamonkey@3513: {
skamonkey@3513: /* standard comment */
skamonkey@3513: ignoring = true;
skamonkey@3513: eol_comment = true;
skamonkey@3513: restage = true;
skamonkey@3513: }
skamonkey@3513: else if (parse_point[i+1] == '*')
skamonkey@3513: {
skamonkey@3513: /* inline comment - start ignoring */
skamonkey@3513: ignoring = true;
skamonkey@3513: ml_comment = true;
skamonkey@3513: /* yes, we restage, meaning that:
skamonkey@3513: * STR/ *stuff* /ING (space because ml comments don't nest in C++)
skamonkey@3513: * will not generate 'STRING', but rather 'STR' and 'ING'.
skamonkey@3513: * This should be a rare occurrence and is done here for convenience.
skamonkey@3513: */
skamonkey@3513: restage = true;
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: else
skamonkey@3513: {
skamonkey@3513: ignoring = true;
skamonkey@3513: eol_comment = true;
skamonkey@3513: restage = true;
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: else if (c == '{')
skamonkey@3513: {
skamonkey@3513: /* If we are staging a string, we must rotate here */
skamonkey@3513: if (strings[0].ptr)
skamonkey@3513: {
skamonkey@3513: /* We have unacceptable tokens on this line */
skamonkey@3513: if (rotate(strings) != NULL)
skamonkey@3513: {
skamonkey@3513: err = SMCError_InvalidSection1;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: /* Sections must always be alone */
skamonkey@3513: if (strings[2].ptr != NULL)
skamonkey@3513: {
skamonkey@3513: err = SMCError_InvalidSection1;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: else if (strings[1].ptr == NULL)
skamonkey@3513: {
skamonkey@3513: err = SMCError_InvalidSection2;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: if ((res=smc->ReadSMC_NewSection(&states, FixupString(strings[1])))
skamonkey@3513: != SMCResult_Continue)
skamonkey@3513: {
skamonkey@3513: err = (res == SMCResult_HaltFail) ? SMCError_Custom : SMCError_Okay;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: strings[1] = emptystring;
skamonkey@3513: curlevel++;
skamonkey@3513: }
skamonkey@3513: else if (c == '}')
skamonkey@3513: {
skamonkey@3513: /* Unlike our matching friend, this can be on the same line as something prior */
skamonkey@3513: if (rotate(strings) != NULL)
skamonkey@3513: {
skamonkey@3513: err = SMCError_InvalidSection3;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: if (strings[2].ptr)
skamonkey@3513: {
skamonkey@3513: if (!curlevel)
skamonkey@3513: {
skamonkey@3513: err = SMCError_InvalidProperty1;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: if ((res=smc->ReadSMC_KeyValue(
skamonkey@3513: &states,
skamonkey@3513: FixupString(strings[2]),
skamonkey@3513: FixupString(strings[1])))
skamonkey@3513: != SMCResult_Continue)
skamonkey@3513: {
skamonkey@3513: err = (res == SMCResult_HaltFail) ? SMCError_Custom : SMCError_Okay;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: else if (strings[1].ptr)
skamonkey@3513: {
skamonkey@3513: err = SMCError_InvalidSection3;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: else if (!curlevel)
skamonkey@3513: {
skamonkey@3513: err = SMCError_InvalidSection4;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: /* Now it's safe to leave the section */
skamonkey@3513: scrap(strings);
skamonkey@3513: if ((res=smc->ReadSMC_LeavingSection(&states)) != SMCResult_Continue)
skamonkey@3513: {
skamonkey@3513: err = (res == SMCResult_HaltFail) ? SMCError_Custom : SMCError_Okay;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: curlevel--;
skamonkey@3513: }
skamonkey@3513: else if (c == '"')
skamonkey@3513: {
skamonkey@3513: /* If we get a quote mark, we always restage, but we need to do it beforehand */
skamonkey@3513: if (strings[0].ptr)
skamonkey@3513: {
skamonkey@3513: strings[0].end = &parse_point[i];
skamonkey@3513: if (rotate(strings) != NULL)
skamonkey@3513: {
skamonkey@3513: err = SMCError_InvalidTokens;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: strings[0].ptr = &parse_point[i];
skamonkey@3513: in_quote = true;
skamonkey@3513: ignoring = true;
skamonkey@3513: }
skamonkey@3513: else if (!strings[0].ptr)
skamonkey@3513: {
skamonkey@3513: /* If we have no string, we must start one */
skamonkey@3513: strings[0].ptr = &parse_point[i];
skamonkey@3513: }
skamonkey@3513: if (restage && strings[0].ptr)
skamonkey@3513: {
skamonkey@3513: strings[0].end = &parse_point[i];
skamonkey@3513: if (rotate(strings) != NULL)
skamonkey@3513: {
skamonkey@3513: err = SMCError_InvalidTokens;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: else
skamonkey@3513: {
skamonkey@3513: /* If we're eating a string and get whitespace, we need to restage.
skamonkey@3513: * (Note that if we are quoted, this is being ignored)
skamonkey@3513: */
skamonkey@3513: if (strings[0].ptr)
skamonkey@3513: {
skamonkey@3513: /*
skamonkey@3513: * The specification says the second string in a pair does not need to be quoted.
skamonkey@3513: * Thus, we check if there's already a string on the stack.
skamonkey@3513: * If there's a newline, we always rotate so the newline has an empty starter.
skamonkey@3513: */
skamonkey@3513: if (!strings[1].ptr)
skamonkey@3513: {
skamonkey@3513: /* There's no string, so we must move this one down and eat up another */
skamonkey@3513: strings[0].end = &parse_point[i];
skamonkey@3513: rotate(strings);
skamonkey@3513: }
skamonkey@3513: else if (!strings[1].quoted)
skamonkey@3513: {
skamonkey@3513: err = SMCError_InvalidTokens;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: /* Advance which token we're on */
skamonkey@3513: states.col++;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: if (line_begin != in_buf)
skamonkey@3513: {
skamonkey@3513: /* The line buffer has advanced, so it's safe to copy N bytes back to the beginning.
skamonkey@3513: * What's N? N is the lowest point we're currently relying on.
skamonkey@3513: */
skamonkey@3513: char *stage = lowstring(strings);
skamonkey@3513: if (!stage || stage > line_begin)
skamonkey@3513: {
skamonkey@3513: stage = line_begin;
skamonkey@3513: }
skamonkey@3513: unsigned int bytes = read - (stage - parse_point);
skamonkey@3513:
skamonkey@3513: /* It is now safe to delete everything before the staged point */
skamonkey@3513: memmove(in_buf, stage, bytes);
skamonkey@3513:
skamonkey@3513: /* Calculate the number of bytes in the new buffer */
skamonkey@3513: bytes = stage - in_buf;
skamonkey@3513: /* Relocate all the cached pointers to our new base */
skamonkey@3513: line_begin -= bytes;
skamonkey@3513: reloc(strings[0], bytes);
skamonkey@3513: reloc(strings[1], bytes);
skamonkey@3513: reloc(strings[2], bytes);
skamonkey@3513: if (reparse_point)
skamonkey@3513: {
skamonkey@3513: reparse_point -= bytes;
skamonkey@3513: }
skamonkey@3513: if (parse_point)
skamonkey@3513: {
skamonkey@3513: parse_point = &parse_point[read];
skamonkey@3513: parse_point -= bytes;
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: else if (read == sizeof(in_buf) - 1)
skamonkey@3513: {
skamonkey@3513: err = SMCError_TokenOverflow;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: /* If we're done parsing and there are tokens left over... */
skamonkey@3513: if (curlevel)
skamonkey@3513: {
skamonkey@3513: err = SMCError_InvalidSection5;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513: else if (strings[0].ptr || strings[1].ptr)
skamonkey@3513: {
skamonkey@3513: err = SMCError_InvalidTokens;
skamonkey@3513: goto failed;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: smc->ReadSMC_ParseEnd(false, false);
skamonkey@3513:
skamonkey@3513: if (pStates != NULL)
skamonkey@3513: {
skamonkey@3513: *pStates = states;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: return SMCError_Okay;
skamonkey@3513:
skamonkey@3513: failed:
skamonkey@3513: if (pStates != NULL)
skamonkey@3513: {
skamonkey@3513: *pStates = states;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: smc->ReadSMC_ParseEnd(true, (err == SMCError_Custom));
skamonkey@3513:
skamonkey@3513: return err;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513:
skamonkey@3513: /**
skamonkey@3513: * INI parser
skamonkey@3513: */
skamonkey@3513:
skamonkey@3513: bool TextParsers::ParseFile_INI(const char *file, ITextListener_INI *ini_listener, unsigned int *line, unsigned int *col)
skamonkey@3513: {
skamonkey@3513: FILE *fp = fopen(file, "rt");
skamonkey@3513: unsigned int curline = 0;
skamonkey@3513: unsigned int curtok;
skamonkey@3513: size_t len;
skamonkey@3513:
skamonkey@3513: if (!fp)
skamonkey@3513: {
skamonkey@3513: if (line)
skamonkey@3513: {
skamonkey@3513: *line = 0;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: return false;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: char buffer[2048];
skamonkey@3513: char *ptr, *save_ptr;
skamonkey@3513: bool in_quote;
skamonkey@3513:
skamonkey@3513: while (!feof(fp))
skamonkey@3513: {
skamonkey@3513: curline++;
skamonkey@3513: curtok = 0;
skamonkey@3513: buffer[0] = '\0';
skamonkey@3513: if (fgets(buffer, sizeof(buffer), fp) == NULL)
skamonkey@3513: {
skamonkey@3513: break;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: //:TODO: this will only run once, so find a nice way to move it out of the while loop
skamonkey@3513: /* If this is the first line, check the first three bytes for BOM */
skamonkey@3513: if (curline == 1 &&
skamonkey@3513: buffer[0] == (char)0xEF &&
skamonkey@3513: buffer[1] == (char)0xBB &&
skamonkey@3513: buffer[2] == (char)0xBF)
skamonkey@3513: {
skamonkey@3513: /* We have a UTF-8 marked file... skip these bytes */
skamonkey@3513: ptr = &buffer[3];
skamonkey@3513: } else {
skamonkey@3513: ptr = buffer;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: /***************************************************
skamonkey@3513: * We preprocess the string before parsing tokens! *
skamonkey@3513: ***************************************************/
skamonkey@3513:
skamonkey@3513: /* First strip beginning whitespace */
skamonkey@3513: while (*ptr != '\0' && g_ws_chartable[(unsigned)*ptr] != 0)
skamonkey@3513: {
skamonkey@3513: ptr++;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: len = strlen(ptr);
skamonkey@3513:
skamonkey@3513: if (!len)
skamonkey@3513: {
skamonkey@3513: continue;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: /* Now search for comment characters */
skamonkey@3513: in_quote = false;
skamonkey@3513: save_ptr = ptr;
skamonkey@3513: for (size_t i=0; i=0 && iReadINI_RawLine(ptr, &curtok))
skamonkey@3513: {
skamonkey@3513: goto event_failed;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: if (*ptr == '[')
skamonkey@3513: {
skamonkey@3513: bool invalid_tokens = false;
skamonkey@3513: bool got_bracket = false;
skamonkey@3513: bool extra_tokens = false;
skamonkey@3513: char c;
skamonkey@3513: bool alnum;
skamonkey@3513: wchar_t wc;
skamonkey@3513:
skamonkey@3513: for (size_t i=1; iReadINI_NewSection(&ptr[1], invalid_tokens, got_bracket, extra_tokens, &curtok))
skamonkey@3513: {
skamonkey@3513: goto event_failed;
skamonkey@3513: }
skamonkey@3513: } else {
skamonkey@3513: char *key_ptr = ptr;
skamonkey@3513: char *val_ptr = NULL;
skamonkey@3513: char c;
skamonkey@3513: size_t first_space = 0;
skamonkey@3513: bool invalid_tokens = false;
skamonkey@3513: bool equal_token = false;
skamonkey@3513: bool quotes = false;
skamonkey@3513: bool alnum;
skamonkey@3513: wchar_t wc;
skamonkey@3513:
skamonkey@3513: for (size_t i=0; iReadINI_KeyValue(key_ptr, val_ptr, invalid_tokens, equal_token, quotes, &curtok))
skamonkey@3513: {
skamonkey@3513: curtok = 0;
skamonkey@3513: goto event_failed;
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: if (line)
skamonkey@3513: {
skamonkey@3513: *line = curline;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: fclose(fp);
skamonkey@3513:
skamonkey@3513: return true;
skamonkey@3513:
skamonkey@3513: event_failed:
skamonkey@3513: if (line)
skamonkey@3513: {
skamonkey@3513: *line = curline;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: if (col)
skamonkey@3513: {
skamonkey@3513: *col = curtok;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: fclose(fp);
skamonkey@3513:
skamonkey@3513: return false;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: const char *TextParsers::GetSMCErrorString(SMCError err)
skamonkey@3513: {
skamonkey@3513: static const char *s_errors[] =
skamonkey@3513: {
skamonkey@3513: NULL,
skamonkey@3513: "Stream failed to open",
skamonkey@3513: "Stream returned read error",
skamonkey@3513: NULL,
skamonkey@3513: "Un-quoted section has invalid tokens",
skamonkey@3513: "Section declared without header",
skamonkey@3513: "Section declared with unknown tokens",
skamonkey@3513: "Section ending without a matching section beginning",
skamonkey@3513: "Section beginning without a matching ending",
skamonkey@3513: "Line contained too many invalid tokens",
skamonkey@3513: "Token buffer overflowed",
skamonkey@3513: "A property was declared outside of a section",
skamonkey@3513: };
skamonkey@3513:
skamonkey@3513: if (err < SMCError_Okay || err > SMCError_InvalidProperty1)
skamonkey@3513: {
skamonkey@3513: return NULL;
skamonkey@3513: }
skamonkey@3513:
skamonkey@3513: return s_errors[err];
skamonkey@3513: }