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Diffstat (limited to 'app/wlib/gtklib/wpref.c')
-rw-r--r--app/wlib/gtklib/wpref.c502
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diff --git a/app/wlib/gtklib/wpref.c b/app/wlib/gtklib/wpref.c
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+/** \file wpref.c Handle loading and saving preferences.
+ *
+ * $Header: /home/dmarkle/xtrkcad-fork-cvs/xtrkcad/app/wlib/gtklib/wpref.c,v 1.15 2010-04-28 04:04:38 dspagnol Exp $
+ */
+
+/* XTrkCad - Model Railroad CAD
+ * Copyright (C) 2005 Dave Bullis
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <dirent.h>
+#include <ctype.h>
+#include <sys/stat.h>
+
+#include "wlib.h"
+#include "dynarr.h"
+#include "i18n.h"
+
+#ifndef TRUE
+#define TRUE (1)
+#define FALSE (0)
+#endif
+
+#ifdef XTRKCAD_CMAKE_BUILD
+#include "xtrkcad-config.h"
+#endif
+
+extern char wAppName[];
+extern char wConfigName[];
+static char appLibDir[BUFSIZ];
+static char appWorkDir[BUFSIZ];
+static char userHomeDir[BUFSIZ];
+
+EXPORT void wInitAppName(char *appName)
+{
+ strcpy(wAppName, appName);
+}
+
+/*
+ *******************************************************************************
+ *
+ * Get Dir Names
+ *
+ *******************************************************************************
+ */
+
+
+EXPORT const char * wGetAppLibDir( void )
+/** Find the directory where configuration files, help, demos etc are installed.
+ * The search order is:
+ * 1. Directory specified by the XTRKCADLIB environment variable
+ * 2. Directory specified by XTRKCAD_INSTALL_PREFIX/share/xtrkcad
+ * 3. /usr/lib/xtrkcad
+ * 4. /usr/local/lib/xtrkcad
+ *
+ * \return pointer to directory name
+ */
+{
+ char * cp, *ep;
+ char msg[BUFSIZ*2];
+ char envvar[80];
+ struct stat buf;
+
+ if (appLibDir[0] != '\0') {
+ return appLibDir;
+ }
+
+ for (cp=wAppName,ep=envvar; *cp; cp++,ep++)
+ *ep = toupper(*cp);
+ strcpy( ep, "LIB" );
+ ep = getenv( envvar );
+ if (ep != NULL) {
+ if ((stat( ep, &buf) == 0 ) && S_ISDIR( buf.st_mode)) {
+ strncpy( appLibDir, ep, sizeof appLibDir );
+ return appLibDir;
+ }
+ }
+
+#ifdef XTRKCAD_CMAKE_BUILD
+ strcpy(appLibDir, XTRKCAD_INSTALL_PREFIX);
+ strcat(appLibDir, "/share/");
+ strcat(appLibDir, wAppName);
+
+ if ((stat( appLibDir, &buf) == 0 ) && S_ISDIR( buf.st_mode)) {
+ return appLibDir;
+ }
+#endif
+
+ strcpy( appLibDir, "/usr/lib/" );
+ strcat( appLibDir, wAppName );
+ if ((stat( appLibDir, &buf) == 0 ) && S_ISDIR( buf.st_mode)) {
+ return appLibDir;
+ }
+
+ strcpy( appLibDir, "/usr/local/lib/" );
+ strcat( appLibDir, wAppName );
+ if ((stat( appLibDir, &buf) == 0 ) && S_ISDIR( buf.st_mode)) {
+ return appLibDir;
+ }
+
+ sprintf( msg,
+ _("The required configuration files could not be located in the expected location.\n\n"
+ "Usually this is an installation problem. Make sure that these files are installed in either \n"
+ " %s/share/xtrkcad or\n"
+ " /usr/lib/%s or\n"
+ " /usr/local/lib/%s\n"
+ "If this is not possible, the environment variable %s must contain "
+ "the name of the correct directory."),
+ XTRKCAD_INSTALL_PREFIX, wAppName, wAppName, envvar );
+ wNoticeEx( NT_ERROR, msg, _("Ok"), NULL );
+ appLibDir[0] = '\0';
+ wExit(0);
+ return NULL;
+}
+
+/**
+ * Get the working directory for the application. This directory is used for storing
+ * internal files including rc files. If it doesn't exist, the directory is created
+ * silently.
+ *
+ * \return pointer to the working directory
+ */
+
+
+EXPORT const char * wGetAppWorkDir(
+ void )
+{
+ char tmp[BUFSIZ+20];
+ char * homeDir;
+ DIR *dirp;
+
+ if (appWorkDir[0] != '\0')
+ return appWorkDir;
+
+ if ((homeDir = getenv( "HOME" )) == NULL) {
+ wNoticeEx( NT_ERROR, _("HOME is not set"), _("Exit"), NULL);
+ wExit(0);
+ }
+ sprintf( appWorkDir, "%s/.%s", homeDir, wAppName );
+ if ( (dirp = opendir(appWorkDir)) != NULL ) {
+ closedir(dirp);
+ } else {
+ if ( mkdir( appWorkDir, 0777 ) == -1 ) {
+ sprintf( tmp, _("Cannot create %s"), appWorkDir );
+ wNoticeEx( NT_ERROR, tmp, _("Exit"), NULL );
+ wExit(0);
+ } else {
+ /*
+ * check for default configuration file and copy to
+ * the workdir if it exists
+ */
+ struct stat stFileInfo;
+ char appEtcConfig[BUFSIZ];
+ sprintf( appEtcConfig, "/etc/%s.rc", wAppName );
+
+ if ( stat( appEtcConfig, &stFileInfo ) == 0 ) {
+ char copyConfigCmd[(BUFSIZ * 2) + 3];
+ sprintf( copyConfigCmd, "cp %s %s", appEtcConfig, appWorkDir );
+ system( copyConfigCmd );
+ }
+ }
+ }
+ return appWorkDir;
+}
+
+/**
+ * Get the user's home directory. The environment variable HOME is
+ * assumed to contain the proper directory.
+ *
+ * \return pointer to the user's home directory
+ */
+
+EXPORT const char *wGetUserHomeDir( void )
+{
+ char *homeDir;
+
+ if( userHomeDir[ 0 ] != '\0' )
+ return userHomeDir;
+
+ if ((homeDir = getenv( "HOME" )) == NULL) {
+ wNoticeEx( NT_ERROR, _("HOME is not set"), _("Exit"), NULL);
+ wExit(0);
+ } else {
+ strcpy( userHomeDir, homeDir );
+ }
+
+ return userHomeDir;
+}
+
+
+/*
+ *******************************************************************************
+ *
+ * Preferences
+ *
+ *******************************************************************************
+ */
+
+typedef struct {
+ char * section;
+ char * name;
+ wBool_t present;
+ wBool_t dirty;
+ char * val;
+ } prefs_t;
+dynArr_t prefs_da;
+#define prefs(N) DYNARR_N(prefs_t,prefs_da,N)
+wBool_t prefInitted = FALSE;
+
+static void readPrefs( void )
+{
+ char tmp[BUFSIZ], *sp, *np, *vp, *cp;
+ const char * workDir;
+ FILE * prefFile;
+ prefs_t * p;
+
+ prefInitted = TRUE;
+ workDir = wGetAppWorkDir();
+ sprintf( tmp, "%s/%s.rc", workDir, wConfigName );
+ prefFile = fopen( tmp, "r" );
+ if (prefFile == NULL)
+ return;
+ while ( ( fgets(tmp, sizeof tmp, prefFile) ) != NULL ) {
+ sp = tmp;
+ while ( *sp==' ' || *sp=='\t' ) sp++;
+ if ( *sp == '\n' || *sp == '#' )
+ continue;
+ np = strchr( sp, '.' );
+ if (np == NULL) {
+ wNoticeEx( NT_INFORMATION, tmp, _("Continue"), NULL );
+ continue;
+ }
+ *np++ = '\0';
+ while ( *np==' ' || *np=='\t' ) np++;
+ vp = strchr( np, ':' );
+ if (vp == NULL) {
+ wNoticeEx( NT_INFORMATION, tmp, _("Continue"), NULL );
+ continue;
+ }
+ *vp++ = '\0';
+ while ( *vp==' ' || *vp=='\t' ) vp++;
+ cp = vp + strlen(vp) -1;
+ while ( cp >= vp && (*cp=='\n' || *cp==' ' || *cp=='\t') ) cp--;
+ cp[1] = '\0';
+ DYNARR_APPEND( prefs_t, prefs_da, 10 );
+ p = &prefs(prefs_da.cnt-1);
+ p->name = strdup(np);
+ p->section = strdup(sp);
+ p->dirty = FALSE;
+ p->val = strdup(vp);
+ }
+ fclose( prefFile );
+}
+
+/**
+ * Store a string in the user preferences.
+ *
+ * \param section IN section in preferences file
+ * \param name IN name of parameter
+ * \param sval IN value to save
+ */
+
+EXPORT void wPrefSetString(
+ const char * section, /* Section */
+ const char * name, /* Name */
+ const char * sval ) /* Value */
+{
+ prefs_t * p;
+
+ if (!prefInitted)
+ readPrefs();
+
+ for (p=&prefs(0); p<&prefs(prefs_da.cnt); p++) {
+ if ( strcmp( p->section, section ) == 0 && strcmp( p->name, name ) == 0 ) {
+ if (p->val)
+ free(p->val);
+ p->dirty = TRUE;
+ p->val = strdup( sval );
+ return;
+ }
+ }
+ DYNARR_APPEND( prefs_t, prefs_da, 10 );
+ p = &prefs(prefs_da.cnt-1);
+ p->name = strdup(name);
+ p->section = strdup(section);
+ p->dirty = TRUE;
+ p->val = strdup(sval);
+}
+
+
+EXPORT const char * wPrefGetString(
+ const char * section, /* Section */
+ const char * name ) /* Name */
+/*
+*/
+{
+ prefs_t * p;
+
+ if (!prefInitted)
+ readPrefs();
+
+ for (p=&prefs(0); p<&prefs(prefs_da.cnt); p++) {
+ if ( strcmp( p->section, section ) == 0 && strcmp( p->name, name ) == 0 ) {
+ return p->val;
+ }
+ }
+ return NULL;
+}
+
+/**
+ * Store an integer value in the user preferences.
+ *
+ * \param section IN section in preferences file
+ * \param name IN name of parameter
+ * \param lval IN value to save
+ */
+
+EXPORT void wPrefSetInteger(
+ const char * section, /* Section */
+ const char * name, /* Name */
+ long lval ) /* Value */
+{
+ char tmp[20];
+
+ sprintf(tmp, "%ld", lval );
+ wPrefSetString( section, name, tmp );
+}
+
+/**
+ * Read an integer value from the user preferences.
+ *
+ * \param section IN section in preferences file
+ * \param name IN name of parameter
+ * \param res OUT resulting value
+ * \param default IN default value
+ * \return TRUE if value differs from default, FALSE if the same
+ */
+
+EXPORT wBool_t wPrefGetInteger(
+ const char * section, /* Section */
+ const char * name, /* Name */
+ long * res, /* Address of result */
+ long def ) /* Default value */
+{
+ const char * cp;
+ char *cp1;
+
+ cp = wPrefGetString( section, name );
+ if (cp == NULL) {
+ *res = def;
+ return FALSE;
+ }
+ *res = strtol(cp,&cp1,0);
+ if (cp==cp1) {
+ *res = def;
+ return FALSE;
+ }
+ return TRUE;
+}
+
+/**
+ * Save a float value in the preferences file.
+ *
+ * \param section IN the file section into which the value should be saved
+ * \param name IN the name of the preference
+ * \param lval IN the value
+ */
+
+EXPORT void wPrefSetFloat(
+ const char * section, /* Section */
+ const char * name, /* Name */
+ double lval ) /* Value */
+{
+ char tmp[20];
+
+ sprintf(tmp, "%0.6f", lval );
+ wPrefSetString( section, name, tmp );
+}
+
+/**
+ * Read a float from the preferencesd file.
+ *
+ * \param section IN the file section from which the value should be read
+ * \param name IN the name of the preference
+ * \param res OUT pointer for the value
+ * \param def IN default value
+ * \return TRUE if value was read, FALSE if default value is used
+ */
+
+
+EXPORT wBool_t wPrefGetFloat(
+ const char * section, /* Section */
+ const char * name, /* Name */
+ double * res, /* Address of result */
+ double def ) /* Default value */
+{
+ const char * cp;
+ char *cp1;
+
+ cp = wPrefGetString( section, name );
+ if (cp == NULL) {
+ *res = def;
+ return FALSE;
+ }
+ *res = strtod(cp, &cp1);
+ if (cp == cp1) {
+ *res = def;
+ return FALSE;
+ }
+ return TRUE;
+}
+
+
+EXPORT const char * wPrefGetSectionItem(
+ const char * sectionName,
+ wIndex_t * index,
+ const char ** name )
+{
+ prefs_t * p;
+
+ if (!prefInitted)
+ readPrefs();
+
+ if ( *index >= prefs_da.cnt )
+ return NULL;
+
+ for (p=&prefs((*index)++); p<&prefs(prefs_da.cnt); p++,(*index)++) {
+ if ( strcmp( p->section, sectionName ) == 0 ) {
+ if ( name )
+ *name = p->name;
+ return p->val;
+ }
+ }
+ return NULL;
+}
+
+/**
+ * Save the configuration to a file. The config parameters are held and updated in an array.
+ * To make the settings persistant, this function has to be called.
+ *
+ */
+
+EXPORT void wPrefFlush(
+ void )
+/*
+*/
+{
+ prefs_t * p;
+ char tmp[BUFSIZ];
+ const char *workDir;
+ FILE * prefFile;
+
+ if (!prefInitted)
+ return;
+
+ workDir = wGetAppWorkDir();
+ sprintf( tmp, "%s/%s.rc", workDir, wConfigName );
+ prefFile = fopen( tmp, "w" );
+ if (prefFile == NULL)
+ return;
+
+ for (p=&prefs(0); p<&prefs(prefs_da.cnt); p++) {
+ fprintf( prefFile, "%s.%s: %s\n", p->section, p->name, p->val );
+ }
+ fclose( prefFile );
+}
+
+
+EXPORT void wPrefReset(
+ void )
+/*
+*/
+{
+ prefs_t * p;
+
+ prefInitted = FALSE;
+ for (p=&prefs(0); p<&prefs(prefs_da.cnt); p++) {
+ if (p->section)
+ free( p->section );
+ if (p->name)
+ free( p->name );
+ if (p->val)
+ free( p->val );
+ }
+ prefs_da.cnt = 0;
+}
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