diff -r ddcdedd3330b -r 2bc61f8841a1 project_files/frontlib/util/inihelper.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/project_files/frontlib/util/inihelper.c	Sun Oct 28 15:12:37 2012 +0100
@@ -0,0 +1,321 @@
+/*
+ * Hedgewars, a free turn based strategy game
+ * Copyright (C) 2012 Simeon Maxein <smaxein@googlemail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include "inihelper.h"
+#include "../iniparser/dictionary.h"
+#include "../iniparser/iniparser.h"
+
+#include "logging.h"
+#include "util.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <limits.h>
+#include <errno.h>
+#include <stdarg.h>
+
+struct _flib_ini {
+	dictionary *inidict;
+	char *currentSection;
+};
+
+static char *createDictKey(const char *sectionName, const char *keyName) {
+	return flib_asprintf("%s:%s", sectionName, keyName);
+}
+
+/**
+ * Turns a string into a lowercase string, in-place.
+ */
+static void strToLower(char *str) {
+	if(str) {
+		while(*str) {
+			*str = tolower(*str);
+			str++;
+		}
+	}
+}
+
+flib_ini *flib_ini_create(const char *filename) {
+	flib_ini *result = NULL;
+	flib_ini *tmpIni = flib_calloc(1, sizeof(flib_ini));
+	if(tmpIni) {
+		if(filename) {
+			tmpIni->inidict = iniparser_load(filename);
+		}
+		if(!tmpIni->inidict) {
+			tmpIni->inidict = dictionary_new(0);
+		}
+		if(tmpIni->inidict) {
+			result = tmpIni;
+			tmpIni = NULL;
+		}
+	}
+	flib_ini_destroy(tmpIni);
+	return result;
+}
+
+flib_ini *flib_ini_load(const char *filename) {
+	flib_ini *result = NULL;
+	if(!log_badargs_if(filename==NULL)) {
+		flib_ini *tmpIni = flib_calloc(1, sizeof(flib_ini));
+		if(tmpIni) {
+			tmpIni->inidict = iniparser_load(filename);
+			if(tmpIni->inidict) {
+				result = tmpIni;
+				tmpIni = NULL;
+			}
+		}
+		flib_ini_destroy(tmpIni);
+	}
+	return result;
+}
+
+int flib_ini_save(flib_ini *ini, const char *filename) {
+	int result = INI_ERROR_OTHER;
+	if(!log_badargs_if2(ini==NULL, filename==NULL)) {
+		FILE *file = fopen(filename, "wb");
+		if(!file) {
+			flib_log_e("Error opening file \"%s\" for writing.", filename);
+		} else {
+			iniparser_dump_ini(ini->inidict, file);
+			if(fclose(file)) {
+				flib_log_e("Write error on ini file \"%s\"", filename);
+			} else {
+				result = 0;
+			}
+		}
+	}
+	return result;
+}
+
+void flib_ini_destroy(flib_ini *ini) {
+	if(ini) {
+		if(ini->inidict) {
+			iniparser_freedict(ini->inidict);
+		}
+		free(ini->currentSection);
+		free(ini);
+	}
+}
+
+int flib_ini_enter_section(flib_ini *ini, const char *section) {
+	int result = INI_ERROR_OTHER;
+	if(ini) {
+		free(ini->currentSection);
+		ini->currentSection = NULL;
+	}
+	if(!log_badargs_if2(ini==NULL, section==NULL)) {
+		if(!iniparser_find_entry(ini->inidict, section)) {
+			flib_log_d("Ini section %s not found", section);
+			result = INI_ERROR_NOTFOUND;
+		} else {
+			ini->currentSection = flib_strdupnull(section);
+			if(ini->currentSection) {
+				// Usually iniparser ignores case, but some section-handling functions don't,
+				// so we set it to lowercase manually
+				strToLower(ini->currentSection);
+				result = 0;
+			}
+		}
+	}
+	return result;
+}
+
+int flib_ini_create_section(flib_ini *ini, const char *section) {
+	int result = INI_ERROR_OTHER;
+	if(!log_badargs_if2(ini==NULL, section==NULL)) {
+		result = flib_ini_enter_section(ini, section);
+		if(result == INI_ERROR_NOTFOUND) {
+			if(iniparser_set(ini->inidict, section, NULL)) {
+				flib_log_e("Error creating ini section %s", section);
+				result = INI_ERROR_OTHER;
+			} else {
+				result = flib_ini_enter_section(ini, section);
+			}
+		}
+	}
+	return result;
+}
+
+/**
+ * The result is an internal string of the iniparser, don't free it.
+ */
+static char *findValue(dictionary *dict, const char *section, const char *key) {
+	char *result = NULL;
+	char *dictKey = createDictKey(section, key);
+	if(dictKey) {
+		result = iniparser_getstring(dict, dictKey, NULL);
+	}
+	free(dictKey);
+	return result;
+}
+
+int flib_ini_get_str(flib_ini *ini, char **outVar, const char *key) {
+	char *tmpValue = NULL;
+	int result = flib_ini_get_str_opt(ini, &tmpValue, key, NULL);
+	if(result==0) {
+		if(tmpValue == NULL) {
+			result = INI_ERROR_NOTFOUND;
+		} else {
+			*outVar = tmpValue;
+			tmpValue = NULL;
+		}
+	}
+	free(tmpValue);
+	return result;
+}
+
+int flib_ini_get_str_opt(flib_ini *ini, char **outVar, const char *key, const char *def) {
+	int result = INI_ERROR_OTHER;
+	if(!log_badargs_if4(ini==NULL, ini->currentSection==NULL, outVar==NULL, key==NULL)) {
+		const char *value = findValue(ini->inidict, ini->currentSection, key);
+		if(!value) {
+			value = def;
+		}
+		char *valueDup = flib_strdupnull(value);
+		if(valueDup || !def) {
+			*outVar = valueDup;
+			result = 0;
+		}
+	}
+	return result;
+}
+
+int flib_ini_get_int(flib_ini *ini, int *outVar, const char *key) {
+	char *tmpValue = NULL;
+	int result = flib_ini_get_str(ini, &tmpValue, key);
+	if(result==0) {
+		errno = 0;
+		long val = strtol(tmpValue, NULL, 10);
+		if(errno!=0 || val<INT_MIN || val>INT_MAX) {
+			flib_log_w("Cannot parse ini setting %s/%s = \"%s\" as integer.", ini->currentSection, key, tmpValue);
+			result = INI_ERROR_FORMAT;
+		} else {
+			*outVar = val;
+		}
+	}
+	free(tmpValue);
+	return result;
+}
+
+int flib_ini_get_int_opt(flib_ini *ini, int *outVar, const char *key, int def) {
+	int tmpValue;
+	int result = flib_ini_get_int(ini, &tmpValue, key);
+	if(result == 0) {
+		*outVar = tmpValue;
+	} else if(result == INI_ERROR_NOTFOUND || result == INI_ERROR_FORMAT) {
+		*outVar = def;
+		result = 0;
+	}
+	return result;
+}
+
+int flib_ini_get_bool(flib_ini *ini, bool *outVar, const char *key) {
+	char *tmpValue = NULL;
+	int result = flib_ini_get_str(ini, &tmpValue, key);
+	if(result==0) {
+		bool trueval = strchr("1tTyY", tmpValue[0]);
+		bool falseval = strchr("0fFnN", tmpValue[0]);
+		if(!trueval && !falseval) {
+			flib_log_w("ini setting %s/%s = \"%s\" is not a recognized truth value.", ini->currentSection, key, tmpValue);
+			result = INI_ERROR_FORMAT;
+		} else {
+			*outVar = trueval;
+		}
+	}
+	free(tmpValue);
+	return result;
+}
+
+int flib_ini_get_bool_opt(flib_ini *ini, bool *outVar, const char *key, bool def) {
+	bool tmpValue;
+	int result = flib_ini_get_bool(ini, &tmpValue, key);
+	if(result == 0) {
+		*outVar = tmpValue;
+	} else if(result == INI_ERROR_NOTFOUND || result == INI_ERROR_FORMAT) {
+		*outVar = def;
+		result = 0;
+	}
+	return result;
+}
+
+int flib_ini_set_str(flib_ini *ini, const char *key, const char *value) {
+	int result = INI_ERROR_OTHER;
+	if(!log_badargs_if4(ini==NULL, ini->currentSection==NULL, key==NULL, value==NULL)) {
+		char *dictKey = createDictKey(ini->currentSection, key);
+		if(dictKey) {
+			result = iniparser_set(ini->inidict, dictKey, value);
+			if(result) {
+				flib_log_e("Error setting ini entry %s to %s", dictKey, value);
+			}
+		}
+		free(dictKey);
+	}
+	return result;
+}
+
+int flib_ini_set_int(flib_ini *ini, const char *key, int value) {
+	int result = INI_ERROR_OTHER;
+	char *strvalue = flib_asprintf("%i", value);
+	if(strvalue) {
+		result = flib_ini_set_str(ini, key, strvalue);
+	}
+	free(strvalue);
+	return result;
+}
+
+int flib_ini_set_bool(flib_ini *ini, const char *key, bool value) {
+	return flib_ini_set_str(ini, key, value ? "true" : "false");
+}
+
+int flib_ini_get_sectioncount(flib_ini *ini) {
+	if(!log_badargs_if(ini==NULL)) {
+		return iniparser_getnsec(ini->inidict);
+	}
+	return INI_ERROR_OTHER;
+}
+
+char *flib_ini_get_sectionname(flib_ini *ini, int number) {
+	if(!log_badargs_if2(ini==NULL, number<0)) {
+		return flib_strdupnull(iniparser_getsecname(ini->inidict, number));
+	}
+	return NULL;
+}
+
+int flib_ini_get_keycount(flib_ini *ini) {
+	if(!log_badargs_if2(ini==NULL, ini->currentSection==NULL)) {
+		return iniparser_getsecnkeys(ini->inidict, ini->currentSection);
+	}
+	return INI_ERROR_OTHER;
+}
+
+char *flib_ini_get_keyname(flib_ini *ini, int number) {
+	char *result = NULL;
+	if(!log_badargs_if3(ini==NULL, ini->currentSection==NULL, number<0)) {
+		int keyCount = iniparser_getsecnkeys(ini->inidict, ini->currentSection);
+		char **keys = iniparser_getseckeys(ini->inidict, ini->currentSection);
+		if(keys && keyCount>number) {
+			// The keys are in the format section:key, so we have to skip the section and colon.
+			result = flib_strdupnull(keys[number]+strlen(ini->currentSection)+1);
+		}
+		free(keys);
+	}
+	return result;
+}