fyrenmoo@3129: /**
fyrenmoo@3129: * vim: set ts=4 :
fyrenmoo@3129: * =============================================================================
fyrenmoo@3129: * SourceMod
fyrenmoo@3129: * Copyright (C) 2004-2008 AlliedModders LLC. All rights reserved.
fyrenmoo@3129: * =============================================================================
fyrenmoo@3129: *
fyrenmoo@3129: * This program is free software; you can redistribute it and/or modify it under
fyrenmoo@3129: * the terms of the GNU General Public License, version 3.0, as published by the
fyrenmoo@3129: * Free Software Foundation.
fyrenmoo@3129: *
fyrenmoo@3129: * This program is distributed in the hope that it will be useful, but WITHOUT
fyrenmoo@3129: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
fyrenmoo@3129: * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
fyrenmoo@3129: * details.
fyrenmoo@3129: *
fyrenmoo@3129: * You should have received a copy of the GNU General Public License along with
fyrenmoo@3129: * this program. If not, see .
fyrenmoo@3129: *
fyrenmoo@3129: * As a special exception, AlliedModders LLC gives you permission to link the
fyrenmoo@3129: * code of this program (as well as its derivative works) to "Half-Life 2," the
fyrenmoo@3129: * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
fyrenmoo@3129: * by the Valve Corporation. You must obey the GNU General Public License in
fyrenmoo@3129: * all respects for all other code used. Additionally, AlliedModders LLC grants
fyrenmoo@3129: * this exception to all derivative works. AlliedModders LLC defines further
fyrenmoo@3129: * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
fyrenmoo@3129: * or .
fyrenmoo@3129: *
fyrenmoo@3129: * Version: $Id$
fyrenmoo@3129: */
fyrenmoo@3129:
fyrenmoo@3129: #include
fyrenmoo@3129: #include
fyrenmoo@3129: #include
fyrenmoo@3129: #include
fyrenmoo@3129: #include
fyrenmoo@3129: #include
fyrenmoo@3129: #include "TextParsers.h"
fyrenmoo@3129: //#include "ShareSys.h"
fyrenmoo@3129: //#include "sm_stringutil.h"
fyrenmoo@3129: //#include "LibrarySys.h"
fyrenmoo@3129:
fyrenmoo@3129: TextParsers g_TextParser;
fyrenmoo@3129: ITextParsers *textparsers = &g_TextParser;
fyrenmoo@3129:
fyrenmoo@3129: static int g_ini_chartable1[255] = {0};
fyrenmoo@3129: static int g_ws_chartable[255] = {0};
fyrenmoo@3129:
fyrenmoo@3129: bool TextParsers::IsWhitespace(const char *stream)
fyrenmoo@3129: {
fyrenmoo@3129: return g_ws_chartable[(unsigned)*stream] == 1;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: TextParsers::TextParsers()
fyrenmoo@3129: {
fyrenmoo@3129: g_ini_chartable1[(unsigned)'_'] = 1;
fyrenmoo@3129: g_ini_chartable1[(unsigned)'-'] = 1;
fyrenmoo@3129: g_ini_chartable1[(unsigned)','] = 1;
fyrenmoo@3129: g_ini_chartable1[(unsigned)'+'] = 1;
fyrenmoo@3129: g_ini_chartable1[(unsigned)'.'] = 1;
fyrenmoo@3129: g_ini_chartable1[(unsigned)'$'] = 1;
fyrenmoo@3129: g_ini_chartable1[(unsigned)'?'] = 1;
fyrenmoo@3129: g_ini_chartable1[(unsigned)'/'] = 1;
fyrenmoo@3129: g_ws_chartable[(unsigned)'\n'] = 1;
fyrenmoo@3129: g_ws_chartable[(unsigned)'\v'] = 1;
fyrenmoo@3129: g_ws_chartable[(unsigned)'\r'] = 1;
fyrenmoo@3129: g_ws_chartable[(unsigned)'\t'] = 1;
fyrenmoo@3129: g_ws_chartable[(unsigned)'\f'] = 1;
fyrenmoo@3129: g_ws_chartable[(unsigned)' '] = 1;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: unsigned int TextParsers::GetUTF8CharBytes(const char *stream)
fyrenmoo@3129: {
fyrenmoo@3129: return _GetUTF8CharBytes(stream);
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: /**
fyrenmoo@3129: * File streams
fyrenmoo@3129: */
fyrenmoo@3129:
fyrenmoo@3129: bool FileStreamReader(void *stream, char *buffer, size_t maxlength, unsigned int *read)
fyrenmoo@3129: {
fyrenmoo@3129: size_t num = fread(buffer, 1, maxlength, (FILE *)stream);
fyrenmoo@3129:
fyrenmoo@3129: *read = static_cast(num);
fyrenmoo@3129:
fyrenmoo@3129: if (num == 0 && feof((FILE *)stream))
fyrenmoo@3129: {
fyrenmoo@3129: return true;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: return (ferror((FILE *)stream) == 0);
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: SMCError TextParsers::ParseFile_SMC(const char *file, ITextListener_SMC *smc, SMCStates *states)
fyrenmoo@3129: {
fyrenmoo@3129: FILE *fp = fopen(file, "rt");
fyrenmoo@3129:
fyrenmoo@3129: if (!fp)
fyrenmoo@3129: {
fyrenmoo@3129: if (states != NULL)
fyrenmoo@3129: {
fyrenmoo@3129: states->line = 0;
fyrenmoo@3129: states->col = 0;
fyrenmoo@3129: }
fyrenmoo@3129: return SMCError_StreamOpen;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: SMCError result = ParseStream_SMC(fp, FileStreamReader, smc, states);
fyrenmoo@3129:
fyrenmoo@3129: fclose(fp);
fyrenmoo@3129:
fyrenmoo@3129: return result;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: SMCError TextParsers::ParseSMCFile(const char *file,
fyrenmoo@3129: ITextListener_SMC *smc_listener,
fyrenmoo@3129: SMCStates *states,
fyrenmoo@3129: char *buffer,
fyrenmoo@3129: size_t maxsize)
fyrenmoo@3129: {
fyrenmoo@3129: const char *errstr;
fyrenmoo@3129: FILE *fp = fopen(file, "rt");
fyrenmoo@3129:
fyrenmoo@3129: if (fp == NULL)
fyrenmoo@3129: {
fyrenmoo@3129: char error[256] = "unknown";
fyrenmoo@3129: if (states != NULL)
fyrenmoo@3129: {
fyrenmoo@3129: states->line = 0;
fyrenmoo@3129: states->col = 0;
fyrenmoo@3129: }
fyrenmoo@3129: //g_LibSys.GetPlatformError(error, sizeof(error));
fyrenmoo@3129: UTIL_Format(buffer, maxsize, "File could not be opened: %s", error);
fyrenmoo@3129: return SMCError_StreamOpen;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: SMCError result = ParseStream_SMC(fp, FileStreamReader, smc_listener, states);
fyrenmoo@3129:
fyrenmoo@3129: fclose(fp);
fyrenmoo@3129:
fyrenmoo@3129: errstr = GetSMCErrorString(result);
fyrenmoo@3129: UTIL_Format(buffer, maxsize, "%s", errstr != NULL ? errstr : "Unknown error");
fyrenmoo@3129:
fyrenmoo@3129: return result;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: struct RawStream
fyrenmoo@3129: {
fyrenmoo@3129: const char *stream;
fyrenmoo@3129: size_t length;
fyrenmoo@3129: size_t pos;
fyrenmoo@3129: };
fyrenmoo@3129:
fyrenmoo@3129: bool RawStreamReader(void *stream, char *buffer, size_t maxlength, unsigned int *read)
fyrenmoo@3129: {
fyrenmoo@3129: RawStream *rs = (RawStream *)stream;
fyrenmoo@3129:
fyrenmoo@3129: if (rs->pos >= rs->length)
fyrenmoo@3129: {
fyrenmoo@3129: return false;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: size_t remaining = rs->length - rs->pos;
fyrenmoo@3129:
fyrenmoo@3129: /* Use the smaller of the two */
fyrenmoo@3129: size_t copy = (remaining > maxlength) ? maxlength : remaining;
fyrenmoo@3129:
fyrenmoo@3129: memcpy(buffer, &rs->stream[rs->pos], copy);
fyrenmoo@3129: rs->pos += copy;
fyrenmoo@3129: *read = copy;
fyrenmoo@3129: assert(rs->pos <= rs->length);
fyrenmoo@3129:
fyrenmoo@3129: return true;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: SMCError TextParsers::ParseSMCStream(const char *stream,
fyrenmoo@3129: size_t length,
fyrenmoo@3129: ITextListener_SMC *smc_listener,
fyrenmoo@3129: SMCStates *states,
fyrenmoo@3129: char *buffer,
fyrenmoo@3129: size_t maxsize)
fyrenmoo@3129: {
fyrenmoo@3129: RawStream rs;
fyrenmoo@3129: SMCError result;
fyrenmoo@3129:
fyrenmoo@3129: rs.stream = stream;
fyrenmoo@3129: rs.length = length;
fyrenmoo@3129: rs.pos = 0;
fyrenmoo@3129:
fyrenmoo@3129: result = ParseStream_SMC(&rs, RawStreamReader, smc_listener, states);
fyrenmoo@3129:
fyrenmoo@3129: const char *errstr = GetSMCErrorString(result);
fyrenmoo@3129: UTIL_Format(buffer, maxsize, "%s", errstr != NULL ? errstr : "Unknown error");
fyrenmoo@3129:
fyrenmoo@3129: return result;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: /**
fyrenmoo@3129: * Raw parsing of streams with helper functions
fyrenmoo@3129: */
fyrenmoo@3129:
fyrenmoo@3129: struct StringInfo
fyrenmoo@3129: {
fyrenmoo@3129: StringInfo() : quoted(false), ptr(NULL), end(NULL), special(false) { }
fyrenmoo@3129: bool quoted;
fyrenmoo@3129: char *ptr;
fyrenmoo@3129: char *end;
fyrenmoo@3129: bool special;
fyrenmoo@3129: };
fyrenmoo@3129:
fyrenmoo@3129: const char *FixupString(StringInfo &data)
fyrenmoo@3129: {
fyrenmoo@3129: if (!data.ptr)
fyrenmoo@3129: {
fyrenmoo@3129: return NULL;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: if (data.quoted)
fyrenmoo@3129: {
fyrenmoo@3129: data.ptr++;
fyrenmoo@3129: }
fyrenmoo@3129: #if defined _DEBUG
fyrenmoo@3129: else {
fyrenmoo@3129: /* A string will never have beginning whitespace because we ignore it in the stream.
fyrenmoo@3129: * Furthermore, if there is trailing whitespace, the end ptr will point to it, so it is valid
fyrenmoo@3129: * to overwrite! Lastly, the last character must be whitespace or a comment/invalid character.
fyrenmoo@3129: */
fyrenmoo@3129: }
fyrenmoo@3129: #endif
fyrenmoo@3129:
fyrenmoo@3129: /* Do some extra work on strings that have special quoted characters. */
fyrenmoo@3129: if (data.special)
fyrenmoo@3129: {
fyrenmoo@3129: char *outptr = data.ptr;
fyrenmoo@3129: size_t len = data.end - data.ptr;
fyrenmoo@3129: if (len >= 2)
fyrenmoo@3129: {
fyrenmoo@3129: for (size_t i=0; i=0; i--)
fyrenmoo@3129: {
fyrenmoo@3129: if (info[i].ptr)
fyrenmoo@3129: {
fyrenmoo@3129: return info[i].ptr;
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: return NULL;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: SMCError TextParsers::ParseStream_SMC(void *stream,
fyrenmoo@3129: STREAMREADER srdr,
fyrenmoo@3129: ITextListener_SMC *smc,
fyrenmoo@3129: SMCStates *pStates)
fyrenmoo@3129: {
fyrenmoo@3129: char *reparse_point = NULL;
fyrenmoo@3129: char in_buf[4096];
fyrenmoo@3129: char *parse_point = in_buf;
fyrenmoo@3129: char *line_begin = in_buf;
fyrenmoo@3129: unsigned int read;
fyrenmoo@3129: unsigned int curlevel = 0;
fyrenmoo@3129: bool in_quote = false;
fyrenmoo@3129: bool ignoring = false;
fyrenmoo@3129: bool eol_comment = false;
fyrenmoo@3129: bool ml_comment = false;
fyrenmoo@3129: unsigned int i;
fyrenmoo@3129: SMCError err = SMCError_Okay;
fyrenmoo@3129: SMCResult res;
fyrenmoo@3129: SMCStates states;
fyrenmoo@3129: char c;
fyrenmoo@3129:
fyrenmoo@3129: StringInfo strings[3];
fyrenmoo@3129: StringInfo emptystring;
fyrenmoo@3129:
fyrenmoo@3129: states.line = 1;
fyrenmoo@3129: states.col = 0;
fyrenmoo@3129:
fyrenmoo@3129: smc->ReadSMC_ParseStart();
fyrenmoo@3129:
fyrenmoo@3129: /**
fyrenmoo@3129: * The stream reader reads in as much as it can fill the buffer with.
fyrenmoo@3129: * It then processes the buffer. If the buffer cannot be fully processed, for example,
fyrenmoo@3129: * a line is left hanging with no newline, then the contents of the buffer is shifted
fyrenmoo@3129: * down, and the buffer is filled from the stream reader again.
fyrenmoo@3129: *
fyrenmoo@3129: * What makes this particularly annoying is that we cache pointers everywhere, so when
fyrenmoo@3129: * the shifting process takes place, all those pointers must be shifted as well.
fyrenmoo@3129: */
fyrenmoo@3129: while (srdr(stream, parse_point, sizeof(in_buf) - (parse_point - in_buf) - 1, &read))
fyrenmoo@3129: {
fyrenmoo@3129: if (!read)
fyrenmoo@3129: {
fyrenmoo@3129: break;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: /* Check for BOM markings, which is only relevant on the first line.
fyrenmoo@3129: * Not worth it, but it could be moved out of the loop.
fyrenmoo@3129: */
fyrenmoo@3129: if (states.line == 1 &&
fyrenmoo@3129: in_buf[0] == (char)0xEF &&
fyrenmoo@3129: in_buf[1] == (char)0xBB &&
fyrenmoo@3129: in_buf[2] == (char)0xBF)
fyrenmoo@3129: {
fyrenmoo@3129: /* Move EVERYTHING down :\ */
fyrenmoo@3129: memmove(in_buf, &in_buf[3], read - 3);
fyrenmoo@3129: read -= 3;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: if (reparse_point)
fyrenmoo@3129: {
fyrenmoo@3129: read += (parse_point - reparse_point);
fyrenmoo@3129: parse_point = reparse_point;
fyrenmoo@3129: reparse_point = NULL;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: for (i=0; iReadSMC_RawLine(&states, line_begin)) != SMCResult_Continue)
fyrenmoo@3129: {
fyrenmoo@3129: err = (res == SMCResult_HaltFail) ? SMCError_Custom : SMCError_Okay;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: parse_point[i] = '\n';
fyrenmoo@3129:
fyrenmoo@3129: /* Now we check the sanity of our staged strings! */
fyrenmoo@3129: if (strings[2].ptr)
fyrenmoo@3129: {
fyrenmoo@3129: if (!curlevel)
fyrenmoo@3129: {
fyrenmoo@3129: err = SMCError_InvalidProperty1;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: /* Assume the next string is a property and pass the info on. */
fyrenmoo@3129: if ((res=smc->ReadSMC_KeyValue(
fyrenmoo@3129: &states,
fyrenmoo@3129: FixupString(strings[2]),
fyrenmoo@3129: FixupString(strings[1]))) != SMCResult_Continue)
fyrenmoo@3129: {
fyrenmoo@3129: err = (res == SMCResult_HaltFail) ? SMCError_Custom : SMCError_Okay;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: scrap(strings);
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: /* Change the states for the next line */
fyrenmoo@3129: states.col = 0;
fyrenmoo@3129: states.line++;
fyrenmoo@3129: line_begin = &parse_point[i+1]; //Note: safe because this gets relocated later
fyrenmoo@3129: }
fyrenmoo@3129: else if (ignoring)
fyrenmoo@3129: {
fyrenmoo@3129: if (in_quote)
fyrenmoo@3129: {
fyrenmoo@3129: /* If i was 0, we could have reparsed, so make sure there's no buffer underrun */
fyrenmoo@3129: if ((&parse_point[i] != in_buf) && c == '"' && parse_point[i-1] != '\\')
fyrenmoo@3129: {
fyrenmoo@3129: /* If we reached a quote in an ignore phase,
fyrenmoo@3129: * we're staging a string and we must rotate it out.
fyrenmoo@3129: */
fyrenmoo@3129: in_quote = false;
fyrenmoo@3129: ignoring = false;
fyrenmoo@3129: /* Set our info */
fyrenmoo@3129: strings[0].end = &parse_point[i];
fyrenmoo@3129: strings[0].quoted = true;
fyrenmoo@3129: if (rotate(strings) != NULL)
fyrenmoo@3129: {
fyrenmoo@3129: /* If we rotated too many strings, there was too much crap on one line */
fyrenmoo@3129: err = SMCError_InvalidTokens;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: else if (c == '\\')
fyrenmoo@3129: {
fyrenmoo@3129: strings[0].special = true;
fyrenmoo@3129: if (i == (read - 1))
fyrenmoo@3129: {
fyrenmoo@3129: reparse_point = &parse_point[i];
fyrenmoo@3129: break;
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: else if (ml_comment)
fyrenmoo@3129: {
fyrenmoo@3129: if (c == '*')
fyrenmoo@3129: {
fyrenmoo@3129: /* Check if we need to get more input first */
fyrenmoo@3129: if (i == read - 1)
fyrenmoo@3129: {
fyrenmoo@3129: reparse_point = &parse_point[i];
fyrenmoo@3129: break;
fyrenmoo@3129: }
fyrenmoo@3129: if (parse_point[i+1] == '/')
fyrenmoo@3129: {
fyrenmoo@3129: ml_comment = false;
fyrenmoo@3129: ignoring = false;
fyrenmoo@3129: /* We should not be staging anything right now. */
fyrenmoo@3129: assert(strings[0].ptr == NULL);
fyrenmoo@3129: /* Advance the input stream so we don't choke on this token */
fyrenmoo@3129: i++;
fyrenmoo@3129: states.col++;
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: else
fyrenmoo@3129: {
fyrenmoo@3129: /* Check if we're whitespace or not */
fyrenmoo@3129: if (!g_ws_chartable[(unsigned)c])
fyrenmoo@3129: {
fyrenmoo@3129: bool restage = false;
fyrenmoo@3129: /* Check various special tokens:
fyrenmoo@3129: * ;
fyrenmoo@3129: * //
fyrenmoo@3129: * / *
fyrenmoo@3129: * {
fyrenmoo@3129: * }
fyrenmoo@3129: */
fyrenmoo@3129: if (c == ';' || c == '/')
fyrenmoo@3129: {
fyrenmoo@3129: /* If it's a line-based comment (that is, ; or //)
fyrenmoo@3129: * we will need to scrap everything until the end of the line.
fyrenmoo@3129: */
fyrenmoo@3129: if (c == '/')
fyrenmoo@3129: {
fyrenmoo@3129: if (i == read - 1)
fyrenmoo@3129: {
fyrenmoo@3129: /* If we reached the end of the look-ahead, we need to re-check our input.
fyrenmoo@3129: * Breaking out will force this to be the new reparse point!
fyrenmoo@3129: */
fyrenmoo@3129: reparse_point = &parse_point[i];
fyrenmoo@3129: break;
fyrenmoo@3129: }
fyrenmoo@3129: if (parse_point[i + 1] == '/')
fyrenmoo@3129: {
fyrenmoo@3129: /* standard comment */
fyrenmoo@3129: ignoring = true;
fyrenmoo@3129: eol_comment = true;
fyrenmoo@3129: restage = true;
fyrenmoo@3129: }
fyrenmoo@3129: else if (parse_point[i+1] == '*')
fyrenmoo@3129: {
fyrenmoo@3129: /* inline comment - start ignoring */
fyrenmoo@3129: ignoring = true;
fyrenmoo@3129: ml_comment = true;
fyrenmoo@3129: /* yes, we restage, meaning that:
fyrenmoo@3129: * STR/ *stuff* /ING (space because ml comments don't nest in C++)
fyrenmoo@3129: * will not generate 'STRING', but rather 'STR' and 'ING'.
fyrenmoo@3129: * This should be a rare occurrence and is done here for convenience.
fyrenmoo@3129: */
fyrenmoo@3129: restage = true;
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: else
fyrenmoo@3129: {
fyrenmoo@3129: ignoring = true;
fyrenmoo@3129: eol_comment = true;
fyrenmoo@3129: restage = true;
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: else if (c == '{')
fyrenmoo@3129: {
fyrenmoo@3129: /* If we are staging a string, we must rotate here */
fyrenmoo@3129: if (strings[0].ptr)
fyrenmoo@3129: {
fyrenmoo@3129: /* We have unacceptable tokens on this line */
fyrenmoo@3129: if (rotate(strings) != NULL)
fyrenmoo@3129: {
fyrenmoo@3129: err = SMCError_InvalidSection1;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: /* Sections must always be alone */
fyrenmoo@3129: if (strings[2].ptr != NULL)
fyrenmoo@3129: {
fyrenmoo@3129: err = SMCError_InvalidSection1;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: else if (strings[1].ptr == NULL)
fyrenmoo@3129: {
fyrenmoo@3129: err = SMCError_InvalidSection2;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: if ((res=smc->ReadSMC_NewSection(&states, FixupString(strings[1])))
fyrenmoo@3129: != SMCResult_Continue)
fyrenmoo@3129: {
fyrenmoo@3129: err = (res == SMCResult_HaltFail) ? SMCError_Custom : SMCError_Okay;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: strings[1] = emptystring;
fyrenmoo@3129: curlevel++;
fyrenmoo@3129: }
fyrenmoo@3129: else if (c == '}')
fyrenmoo@3129: {
fyrenmoo@3129: /* Unlike our matching friend, this can be on the same line as something prior */
fyrenmoo@3129: if (rotate(strings) != NULL)
fyrenmoo@3129: {
fyrenmoo@3129: err = SMCError_InvalidSection3;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: if (strings[2].ptr)
fyrenmoo@3129: {
fyrenmoo@3129: if (!curlevel)
fyrenmoo@3129: {
fyrenmoo@3129: err = SMCError_InvalidProperty1;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: if ((res=smc->ReadSMC_KeyValue(
fyrenmoo@3129: &states,
fyrenmoo@3129: FixupString(strings[2]),
fyrenmoo@3129: FixupString(strings[1])))
fyrenmoo@3129: != SMCResult_Continue)
fyrenmoo@3129: {
fyrenmoo@3129: err = (res == SMCResult_HaltFail) ? SMCError_Custom : SMCError_Okay;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: else if (strings[1].ptr)
fyrenmoo@3129: {
fyrenmoo@3129: err = SMCError_InvalidSection3;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: else if (!curlevel)
fyrenmoo@3129: {
fyrenmoo@3129: err = SMCError_InvalidSection4;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: /* Now it's safe to leave the section */
fyrenmoo@3129: scrap(strings);
fyrenmoo@3129: if ((res=smc->ReadSMC_LeavingSection(&states)) != SMCResult_Continue)
fyrenmoo@3129: {
fyrenmoo@3129: err = (res == SMCResult_HaltFail) ? SMCError_Custom : SMCError_Okay;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: curlevel--;
fyrenmoo@3129: }
fyrenmoo@3129: else if (c == '"')
fyrenmoo@3129: {
fyrenmoo@3129: /* If we get a quote mark, we always restage, but we need to do it beforehand */
fyrenmoo@3129: if (strings[0].ptr)
fyrenmoo@3129: {
fyrenmoo@3129: strings[0].end = &parse_point[i];
fyrenmoo@3129: if (rotate(strings) != NULL)
fyrenmoo@3129: {
fyrenmoo@3129: err = SMCError_InvalidTokens;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: strings[0].ptr = &parse_point[i];
fyrenmoo@3129: in_quote = true;
fyrenmoo@3129: ignoring = true;
fyrenmoo@3129: }
fyrenmoo@3129: else if (!strings[0].ptr)
fyrenmoo@3129: {
fyrenmoo@3129: /* If we have no string, we must start one */
fyrenmoo@3129: strings[0].ptr = &parse_point[i];
fyrenmoo@3129: }
fyrenmoo@3129: if (restage && strings[0].ptr)
fyrenmoo@3129: {
fyrenmoo@3129: strings[0].end = &parse_point[i];
fyrenmoo@3129: if (rotate(strings) != NULL)
fyrenmoo@3129: {
fyrenmoo@3129: err = SMCError_InvalidTokens;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: else
fyrenmoo@3129: {
fyrenmoo@3129: /* If we're eating a string and get whitespace, we need to restage.
fyrenmoo@3129: * (Note that if we are quoted, this is being ignored)
fyrenmoo@3129: */
fyrenmoo@3129: if (strings[0].ptr)
fyrenmoo@3129: {
fyrenmoo@3129: /*
fyrenmoo@3129: * The specification says the second string in a pair does not need to be quoted.
fyrenmoo@3129: * Thus, we check if there's already a string on the stack.
fyrenmoo@3129: * If there's a newline, we always rotate so the newline has an empty starter.
fyrenmoo@3129: */
fyrenmoo@3129: if (!strings[1].ptr)
fyrenmoo@3129: {
fyrenmoo@3129: /* There's no string, so we must move this one down and eat up another */
fyrenmoo@3129: strings[0].end = &parse_point[i];
fyrenmoo@3129: rotate(strings);
fyrenmoo@3129: }
fyrenmoo@3129: else if (!strings[1].quoted)
fyrenmoo@3129: {
fyrenmoo@3129: err = SMCError_InvalidTokens;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: /* Advance which token we're on */
fyrenmoo@3129: states.col++;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: if (line_begin != in_buf)
fyrenmoo@3129: {
fyrenmoo@3129: /* The line buffer has advanced, so it's safe to copy N bytes back to the beginning.
fyrenmoo@3129: * What's N? N is the lowest point we're currently relying on.
fyrenmoo@3129: */
fyrenmoo@3129: char *stage = lowstring(strings);
fyrenmoo@3129: if (!stage || stage > line_begin)
fyrenmoo@3129: {
fyrenmoo@3129: stage = line_begin;
fyrenmoo@3129: }
fyrenmoo@3129: unsigned int bytes = read - (stage - parse_point);
fyrenmoo@3129:
fyrenmoo@3129: /* It is now safe to delete everything before the staged point */
fyrenmoo@3129: memmove(in_buf, stage, bytes);
fyrenmoo@3129:
fyrenmoo@3129: /* Calculate the number of bytes in the new buffer */
fyrenmoo@3129: bytes = stage - in_buf;
fyrenmoo@3129: /* Relocate all the cached pointers to our new base */
fyrenmoo@3129: line_begin -= bytes;
fyrenmoo@3129: reloc(strings[0], bytes);
fyrenmoo@3129: reloc(strings[1], bytes);
fyrenmoo@3129: reloc(strings[2], bytes);
fyrenmoo@3129: if (reparse_point)
fyrenmoo@3129: {
fyrenmoo@3129: reparse_point -= bytes;
fyrenmoo@3129: }
fyrenmoo@3129: if (parse_point)
fyrenmoo@3129: {
fyrenmoo@3129: parse_point = &parse_point[read];
fyrenmoo@3129: parse_point -= bytes;
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: else if (read == sizeof(in_buf) - 1)
fyrenmoo@3129: {
fyrenmoo@3129: err = SMCError_TokenOverflow;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: /* If we're done parsing and there are tokens left over... */
fyrenmoo@3129: if (curlevel)
fyrenmoo@3129: {
fyrenmoo@3129: err = SMCError_InvalidSection5;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129: else if (strings[0].ptr || strings[1].ptr)
fyrenmoo@3129: {
fyrenmoo@3129: err = SMCError_InvalidTokens;
fyrenmoo@3129: goto failed;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: smc->ReadSMC_ParseEnd(false, false);
fyrenmoo@3129:
fyrenmoo@3129: if (pStates != NULL)
fyrenmoo@3129: {
fyrenmoo@3129: *pStates = states;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: return SMCError_Okay;
fyrenmoo@3129:
fyrenmoo@3129: failed:
fyrenmoo@3129: if (pStates != NULL)
fyrenmoo@3129: {
fyrenmoo@3129: *pStates = states;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: smc->ReadSMC_ParseEnd(true, (err == SMCError_Custom));
fyrenmoo@3129:
fyrenmoo@3129: return err;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129:
fyrenmoo@3129: /**
fyrenmoo@3129: * INI parser
fyrenmoo@3129: */
fyrenmoo@3129:
fyrenmoo@3129: bool TextParsers::ParseFile_INI(const char *file, ITextListener_INI *ini_listener, unsigned int *line, unsigned int *col)
fyrenmoo@3129: {
fyrenmoo@3129: FILE *fp = fopen(file, "rt");
fyrenmoo@3129: unsigned int curline = 0;
fyrenmoo@3129: unsigned int curtok;
fyrenmoo@3129: size_t len;
fyrenmoo@3129:
fyrenmoo@3129: if (!fp)
fyrenmoo@3129: {
fyrenmoo@3129: if (line)
fyrenmoo@3129: {
fyrenmoo@3129: *line = 0;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: return false;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: char buffer[2048];
fyrenmoo@3129: char *ptr, *save_ptr;
fyrenmoo@3129: bool in_quote;
fyrenmoo@3129:
fyrenmoo@3129: while (!feof(fp))
fyrenmoo@3129: {
fyrenmoo@3129: curline++;
fyrenmoo@3129: curtok = 0;
fyrenmoo@3129: buffer[0] = '\0';
fyrenmoo@3129: if (fgets(buffer, sizeof(buffer), fp) == NULL)
fyrenmoo@3129: {
fyrenmoo@3129: break;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: //:TODO: this will only run once, so find a nice way to move it out of the while loop
fyrenmoo@3129: /* If this is the first line, check the first three bytes for BOM */
fyrenmoo@3129: if (curline == 1 &&
fyrenmoo@3129: buffer[0] == (char)0xEF &&
fyrenmoo@3129: buffer[1] == (char)0xBB &&
fyrenmoo@3129: buffer[2] == (char)0xBF)
fyrenmoo@3129: {
fyrenmoo@3129: /* We have a UTF-8 marked file... skip these bytes */
fyrenmoo@3129: ptr = &buffer[3];
fyrenmoo@3129: } else {
fyrenmoo@3129: ptr = buffer;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: /***************************************************
fyrenmoo@3129: * We preprocess the string before parsing tokens! *
fyrenmoo@3129: ***************************************************/
fyrenmoo@3129:
fyrenmoo@3129: /* First strip beginning whitespace */
fyrenmoo@3129: while (*ptr != '\0' && g_ws_chartable[(unsigned)*ptr] != 0)
fyrenmoo@3129: {
fyrenmoo@3129: ptr++;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: len = strlen(ptr);
fyrenmoo@3129:
fyrenmoo@3129: if (!len)
fyrenmoo@3129: {
fyrenmoo@3129: continue;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: /* Now search for comment characters */
fyrenmoo@3129: in_quote = false;
fyrenmoo@3129: save_ptr = ptr;
fyrenmoo@3129: for (size_t i=0; i=0 && iReadINI_RawLine(ptr, &curtok))
fyrenmoo@3129: {
fyrenmoo@3129: goto event_failed;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: if (*ptr == '[')
fyrenmoo@3129: {
fyrenmoo@3129: bool invalid_tokens = false;
fyrenmoo@3129: bool got_bracket = false;
fyrenmoo@3129: bool extra_tokens = false;
fyrenmoo@3129: char c;
fyrenmoo@3129: bool alnum;
fyrenmoo@3129: wchar_t wc;
fyrenmoo@3129:
fyrenmoo@3129: for (size_t i=1; iReadINI_NewSection(&ptr[1], invalid_tokens, got_bracket, extra_tokens, &curtok))
fyrenmoo@3129: {
fyrenmoo@3129: goto event_failed;
fyrenmoo@3129: }
fyrenmoo@3129: } else {
fyrenmoo@3129: char *key_ptr = ptr;
fyrenmoo@3129: char *val_ptr = NULL;
fyrenmoo@3129: char c;
fyrenmoo@3129: size_t first_space = 0;
fyrenmoo@3129: bool invalid_tokens = false;
fyrenmoo@3129: bool equal_token = false;
fyrenmoo@3129: bool quotes = false;
fyrenmoo@3129: bool alnum;
fyrenmoo@3129: wchar_t wc;
fyrenmoo@3129:
fyrenmoo@3129: for (size_t i=0; iReadINI_KeyValue(key_ptr, val_ptr, invalid_tokens, equal_token, quotes, &curtok))
fyrenmoo@3129: {
fyrenmoo@3129: curtok = 0;
fyrenmoo@3129: goto event_failed;
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: if (line)
fyrenmoo@3129: {
fyrenmoo@3129: *line = curline;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: fclose(fp);
fyrenmoo@3129:
fyrenmoo@3129: return true;
fyrenmoo@3129:
fyrenmoo@3129: event_failed:
fyrenmoo@3129: if (line)
fyrenmoo@3129: {
fyrenmoo@3129: *line = curline;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: if (col)
fyrenmoo@3129: {
fyrenmoo@3129: *col = curtok;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: fclose(fp);
fyrenmoo@3129:
fyrenmoo@3129: return false;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: const char *TextParsers::GetSMCErrorString(SMCError err)
fyrenmoo@3129: {
fyrenmoo@3129: static const char *s_errors[] =
fyrenmoo@3129: {
fyrenmoo@3129: NULL,
fyrenmoo@3129: "Stream failed to open",
fyrenmoo@3129: "Stream returned read error",
fyrenmoo@3129: NULL,
fyrenmoo@3129: "Un-quoted section has invalid tokens",
fyrenmoo@3129: "Section declared without header",
fyrenmoo@3129: "Section declared with unknown tokens",
fyrenmoo@3129: "Section ending without a matching section beginning",
fyrenmoo@3129: "Section beginning without a matching ending",
fyrenmoo@3129: "Line contained too many invalid tokens",
fyrenmoo@3129: "Token buffer overflowed",
fyrenmoo@3129: "A property was declared outside of a section",
fyrenmoo@3129: };
fyrenmoo@3129:
fyrenmoo@3129: if (err < SMCError_Okay || err > SMCError_InvalidProperty1)
fyrenmoo@3129: {
fyrenmoo@3129: return NULL;
fyrenmoo@3129: }
fyrenmoo@3129:
fyrenmoo@3129: return s_errors[err];
fyrenmoo@3129: }