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/* |
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configuration.c - Part of psiconv, a PSION 5 file formats converter |
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Copyright (c) 1999-2004 Frodo Looijaard <frodol@dds.nl> |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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|
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#include "config.h" |
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#include "compat.h" |
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#include "error.h" |
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#include "unicode.h" |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <strings.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <unistd.h> |
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#include <fcntl.h> |
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|
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#include "configuration.h" |
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|
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#ifdef DMALLOC |
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#include <dmalloc.h> |
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#endif |
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|
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#ifndef CONFIGURATION_SEARCH_PATH |
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#define CONFIGURATION_SEARCH_PATH PSICONVETCDIR "/psiconv.conf:~/.psiconv.conf" |
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#endif |
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static struct psiconv_config_s default_config = |
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{ PSICONV_VERB_WARN, 2, 0,0,0,psiconv_bool_false,NULL,'?','?',{ 0 },psiconv_bool_false }; |
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|
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static void psiconv_config_parse_statement(const char *filename, |
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int linenr, |
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const char *var, int value, |
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psiconv_config *config); |
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|
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static void psiconv_config_parse_line(const char *filename, int linenr, |
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const char *line, psiconv_config *config); |
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|
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static void psiconv_config_parse_file(const char *filename, |
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psiconv_config *config); |
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|
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psiconv_config psiconv_config_default(void) |
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{ |
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psiconv_config result; |
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result = malloc(sizeof(*result)); |
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*result = default_config; |
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psiconv_unicode_select_characterset(result,1); |
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return result; |
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} |
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|
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void psiconv_config_free(psiconv_config config) |
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{ |
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free(config); |
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} |
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|
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void psiconv_config_parse_statement(const char *filename, |
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int linenr, |
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const char *var, int value, |
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psiconv_config *config) |
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{ |
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int charnr; |
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|
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if (!(strcasecmp(var,"verbosity"))) { |
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if ((value >= 1) && (value <= 5)) |
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(*config)->verbosity = value; |
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else |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"Verbosity should be between 1 and 5",filename,linenr); |
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} else if (!(strcasecmp(var,"color"))) { |
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if ((value == 0) || (value == 1)) |
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(*config)->color = value; |
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else |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"Color should be 0 or 1",filename,linenr); |
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} else if (!(strcasecmp(var,"colordepth"))) { |
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if ((value > 0) && (value <= 32)) |
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(*config)->colordepth = value; |
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else |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"ColorDepth should be between 1 and 32",filename,linenr); |
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} else if (!(strcasecmp(var,"redbits"))) { |
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if ((value >= 0) && (value <= 32)) |
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(*config)->redbits = value; |
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else |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"RedBits should be between 1 and 32 or 0",filename,linenr); |
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} else if (!(strcasecmp(var,"greenbits"))) { |
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if ((value >= 0) && (value <= 32)) |
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(*config)->greenbits = value; |
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else |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"GreenBits should be between 1 and 32 or 0",filename,linenr); |
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} else if (!(strcasecmp(var,"bluebits"))) { |
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if ((value >= 0) && (value <= 32)) |
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(*config)->bluebits = value; |
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else |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"BlueBits should be between 1 and 32 or 0",filename,linenr); |
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} else if (!(strcasecmp(var,"characterset"))) { |
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if ((value >= 0) && (value <= 1)) |
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psiconv_unicode_select_characterset(*config,value); |
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else |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"CharacterSet should be between 0 and 1", |
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filename,linenr); |
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} else if (!(strcasecmp(var,"unknownunicodechar"))) { |
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if ((value >= 1) && (value < 0x10000)) |
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(*config)->unknown_unicode_char = value; |
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else |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"UnknownUnicodeChar should be between 1 and 65535", |
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filename,linenr); |
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} else if (!(strcasecmp(var,"unknownepocchar"))) { |
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if ((value >= 1) && (value < 0x100)) |
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(*config)->unknown_epoc_char = value; |
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else |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"UnknownEPOCChar should be between 1 and 255", |
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filename,linenr); |
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} else if (sscanf(var,"char%d",&charnr) == strlen(var)) { |
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if ((charnr < 0) || (charnr > 255)) |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"CharXXX should have XXX between 0 and 255", |
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filename,linenr); |
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if ((value >= 1) && (value <= 0x10000)) |
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(*config)->unicode_table[charnr] = value; |
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else |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"CharXXX should be between 1 and 65535", |
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filename,linenr); |
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} else { |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"Unknown variable %s",filename,linenr,var); |
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} |
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psiconv_debug(*config,0,0,"Configuration file %s, line %d: " |
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"Set variable %s to %d",filename,linenr,var,value); |
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} |
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|
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|
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void psiconv_config_parse_line(const char *filename, int linenr, |
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const char *line, psiconv_config *config) |
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{ |
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|
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int sovar,eovar,soval,eoval,eol; |
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char *var; |
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long val; |
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|
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psiconv_debug(*config,0,0,"Going to parse line %d: %s",linenr,line); |
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sovar = 0; |
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while (line[sovar] && (line[sovar] < 32)) |
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sovar ++; |
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if (!line[sovar] || line[sovar] == '#') |
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return; |
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eovar = sovar; |
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while (line[eovar] && (((line[eovar] >= 'A') && (line[eovar] <= 'Z')) || |
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((line[eovar] >= 'a') && (line[eovar] <= 'z')))) |
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eovar ++; |
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if (sovar == eovar) { |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"Syntax error (no variable found)",filename,linenr); |
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return; |
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} |
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soval = eovar; |
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while (line[soval] && (line[soval] <= 32)) |
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soval ++; |
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if (line[soval] != '=') { |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"Syntax error (no = token found)",filename,linenr); |
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return; |
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} |
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soval ++; |
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while (line[soval] && (line[soval] <= 32)) |
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soval ++; |
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eoval = soval; |
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while (line[eoval] && ((line[eoval] >= '0') && (line[eoval] <= '9'))) |
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eoval ++; |
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if (eoval == soval) { |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"Syntax error (no value found)",filename,linenr); |
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return; |
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} |
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if (soval - eoval > 7) { |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"Syntax error (value too large)",filename,linenr); |
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return; |
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} |
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eol = eoval; |
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while (line[eol] && (line[eol] < 32)) |
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eol ++; |
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if (line[eol]) { |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"Syntax error (trailing garbage)",filename,linenr); |
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return; |
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} |
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|
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var = malloc(eovar - sovar + 1); |
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memcpy(var,line + sovar, eovar - sovar); |
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var[eovar-sovar] = 0; |
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|
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val = atol(line + soval); |
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|
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psiconv_config_parse_statement(filename,linenr,var,val,config); |
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free(var); |
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} |
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|
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|
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void psiconv_config_parse_file(const char *filename, psiconv_config *config) |
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{ |
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int file,linenr; |
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struct stat stat_buf; |
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off_t filesize,bytes_left,bytes_read,sol,eol; |
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char *filebuffer,*filebuffer_ptr; |
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|
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psiconv_progress(*config,0,0, |
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"Going to access configuration file %s",filename); |
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|
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/* Try to open the file; it may fail, if it does not exist for example */ |
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if ((file = open(filename,O_RDONLY)) == -1) |
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goto ERROR0; |
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|
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/* Read the contents of the file into filebuffer. This may fail */ |
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if (fstat(file,&stat_buf)) { |
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if (close(file)) |
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psiconv_error(*config,0,0,"Configuration file %s: " |
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"Couldn't close file",filename); |
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return; |
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} |
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|
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filesize = stat_buf.st_size; |
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if (!(filebuffer = malloc(filesize + 1))) { |
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psiconv_error(*config,0,0,"Configuration file %s: " |
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"Out of memory error",filename); |
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goto ERROR1; |
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} |
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|
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filebuffer_ptr = filebuffer; |
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bytes_left = filesize; |
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bytes_read = 1; /* Dummy for the first time through the loop */ |
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while ((bytes_read > 0) && bytes_left) { |
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bytes_read = read(file,filebuffer_ptr,bytes_left); |
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if (bytes_read > 0) { |
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filebuffer_ptr += bytes_read; |
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bytes_left -= bytes_read; |
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} |
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} |
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|
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/* On NFS, the first read may fail and this is not fatal */ |
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if (bytes_left && (bytes_left != filesize)) { |
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psiconv_error(*config,0,0,"Configuration file %s: " |
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"Couldn't read file into memory",filename); |
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goto ERROR2; |
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} |
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|
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if (close(file)) { |
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psiconv_error(*config,0,0,"Configuration file %s: " |
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"Couldn't close file",filename); |
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file = -1; |
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goto ERROR2; |
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} |
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file = -1; |
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|
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psiconv_progress(*config,0,0, |
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"Going to parse configuration file %s: ",filename); |
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/* Now we walk through the file to isolate lines */ |
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linenr = 0; |
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sol = 0; |
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|
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while (sol < filesize) { |
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linenr ++; |
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eol = sol; |
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while ((eol < filesize) && (filebuffer[eol] != 13) && |
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(filebuffer[eol] != 10) && (filebuffer[eol] != 0)) |
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eol ++; |
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|
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if ((eol < filesize) && (filebuffer[eol] == 0)) { |
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psiconv_error(*config,0,0,"Configuration file %s, line %d: " |
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"Unexpected character \000 found",filename,linenr); |
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goto ERROR2; |
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} |
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if ((eol < filesize + 1) && |
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(((filebuffer[eol] == 13) && (filebuffer[eol+1] == 10)) || |
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((filebuffer[eol] == 10) && (filebuffer[eol+1] == 13)))) { |
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filebuffer[eol] = 0; |
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eol ++; |
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} |
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filebuffer[eol] = 0; |
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psiconv_config_parse_line(filename,linenr,filebuffer + sol,config); |
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sol = eol+1; |
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} |
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free(filebuffer); |
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return; |
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|
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ERROR2: |
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free(filebuffer); |
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ERROR1: |
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if ((file != -1) && close(file)) |
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psiconv_error(*config,0,0,"Configuration file %s: " |
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"Couldn't close file",filename); |
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ERROR0: |
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return; |
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} |
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|
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void psiconv_config_read(const char *extra_config_files, |
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psiconv_config *config) |
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{ |
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char *path,*pathptr,*filename,*filename_old; |
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const char *home; |
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int filename_len; |
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|
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/* Make path be the complete search path, colon separated */ |
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if (extra_config_files && strlen(extra_config_files)) { |
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path = malloc(strlen(CONFIGURATION_SEARCH_PATH) + |
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strlen(extra_config_files) + 2); |
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strcpy(path,CONFIGURATION_SEARCH_PATH); |
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strcat(path,":"); |
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strcat(path,extra_config_files); |
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} else { |
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path = strdup(CONFIGURATION_SEARCH_PATH); |
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} |
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|
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pathptr = path; |
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while (strlen(pathptr)) { |
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/* Isolate the next filename */ |
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filename_len = (index(pathptr,':')?(index(pathptr,':') - pathptr): |
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strlen(pathptr)); |
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filename = malloc(filename_len + 1); |
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filename = strncpy(filename,pathptr,filename_len); |
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filename[filename_len] = 0; |
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pathptr += filename_len; |
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if (strlen(pathptr)) |
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pathptr ++; |
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|
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/* Do ~ substitution */ |
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if ((filename[0] == '~') && ((filename[1] == '/') || filename[1] == 0)) { |
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home = getenv("HOME"); |
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if (home) { |
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filename_old = filename; |
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filename = malloc(strlen(filename_old) + strlen(home)); |
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strcpy(filename,home); |
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strcpy(filename + strlen(filename),filename_old+1); |
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free(filename_old); |
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} |
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} |
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|
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psiconv_config_parse_file(filename,config); |
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free(filename); |
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} |
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free(path); |
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} |
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