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/** \file
*
* \author Copyright 2000 Scott Fritzinger
*
* \par License
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* \par
* This library 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
* Lesser General Public License for more details.
*
* \par
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#define _DEFAULT_SOURCE
#include "config.h"
#include <gphoto2/gphoto2-setting.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <gphoto2/gphoto2-result.h>
#include <gphoto2/gphoto2-port-log.h>
#include <gphoto2/gphoto2-port-portability.h>
#ifdef WIN32
/* Win32 headers may use interface as a define; temporarily correct this */
#define interface struct
#include <shlobj.h>
#undef interface
#endif
/**
* Internal struct to store settings.
*/
typedef struct {
/* key = value settings */
char id[256];
char key[256];
char value[256];
} Setting;
/* Currently loaded settings */
static int glob_setting_count = 0;
static Setting glob_setting[512];
static int save_settings (void);
#define CHECK_RESULT(result) {int r = (result); if (r < 0) return (r);}
static int load_settings (void);
/**
* \brief Retrieve a specific gphoto setting.
* \param id the frontend id of the caller
* \param key the key the frontend queries
* \param value changed value
* \return GPhoto error code
*
* This function retrieves the setting key for a specific frontend
* id and copies the value into the passed value pointer.
*/
int
gp_setting_get (char *id, char *key, char *value)
{
int x;
C_PARAMS (id && key);
if (!glob_setting_count)
load_settings ();
for (x=0; x<glob_setting_count; x++) {
if ((strcmp(glob_setting[x].id, id)==0) &&
(strcmp(glob_setting[x].key, key)==0)) {
strcpy(value, glob_setting[x].value);
return (GP_OK);
}
}
strcpy(value, "");
return(GP_ERROR);
}
/**
* \brief Set a specific gphoto setting.
*
* \param id the frontend id of the caller
* \param key the key the frontend queries
* \param value new value
* \return GPhoto error code
*
* This function sets the setting key for a specific frontend
* id to the value.
*/
int
gp_setting_set (char *id, char *key, char *value)
{
int x;
C_PARAMS (id && key);
if (!glob_setting_count)
load_settings ();
GP_LOG_D ("Setting key '%s' to value '%s' (%s)", key, value, id);
for (x=0; x<glob_setting_count; x++) {
if ((strcmp(glob_setting[x].id, id)==0) &&
(strcmp(glob_setting[x].key, key)==0)) {
strcpy(glob_setting[x].value, value);
save_settings ();
return (GP_OK);
}
}
strcpy(glob_setting[glob_setting_count].id, id);
strcpy(glob_setting[glob_setting_count].key, key);
strcpy(glob_setting[glob_setting_count++].value, value);
save_settings ();
return (GP_OK);
}
static int
verify_settings (char *settings_file)
{
FILE *f;
char buf[1024];
unsigned int x, equals;
if ((f=fopen(settings_file, "r"))==NULL) {
GP_LOG_D ("Can't open settings file '%s' for reading.", settings_file);
return(0);
}
rewind(f);
while (!feof(f)) {
strcpy(buf, "");
if (!fgets(buf, 1023, f))
break;
buf[strlen(buf)] = 0;
if (strlen(buf)>2) {
equals = 0;
for (x=0; x<strlen(buf); x++)
if (buf[x] == '=')
equals++;
if (equals < 2) {
fclose (f);
GP_LOG_E ("Incorrect settings format. Resetting.");
unlink(settings_file);
return (GP_ERROR);
}
}
}
fclose (f);
return (GP_OK);
}
static int
load_settings (void)
{
FILE *f;
char buf[1024], *id, *key, *value;
/* Make sure the directories are created */
#ifdef WIN32
SHGetFolderPath(NULL, CSIDL_PROFILE, NULL, 0, buf);
strcat (buf, "\\.gphoto");
#else
snprintf (buf, sizeof(buf), "%s/.gphoto", getenv ("HOME"));
#endif
GP_LOG_D ("Creating gphoto config directory ('%s')", buf);
(void)gp_system_mkdir (buf);
glob_setting_count = 0;
#ifdef WIN32
SHGetFolderPath(NULL, CSIDL_PROFILE, NULL, 0, buf);
strcat(buf, "\\.gphoto\\settings");
#else
snprintf(buf, sizeof(buf), "%s/.gphoto/settings", getenv("HOME"));
#endif
if (verify_settings(buf) != GP_OK)
/* verify_settings will unlink and recreate the settings file */
return (GP_OK);
GP_LOG_D ("Loading settings from file '%s'.", buf);
if ((f=fopen(buf, "r"))==NULL) {
GP_LOG_D ("Can't open settings file '%s' for reading.", buf);
return(GP_ERROR);
}
rewind(f);
while (!feof(f)) {
strcpy(buf, "");
if (!fgets(buf, 1023, f))
break;
if (strlen(buf)>2) {
buf[strlen(buf)-1] = '\0';
id = strtok(buf, "=");
strcpy(glob_setting[glob_setting_count].id,id);
key = strtok(NULL, "=");
strcpy(glob_setting[glob_setting_count].key,key);
value = strtok(NULL, "\0");
if (value)
strcpy(glob_setting[glob_setting_count++].value, value);
else
strcpy(glob_setting[glob_setting_count++].value, "");
}
}
fclose (f);
return (GP_OK);
}
static int
save_settings (void)
{
FILE *f;
char buf[1024];
int x=0;
#ifdef WIN32
SHGetFolderPath(NULL, CSIDL_PROFILE, NULL, 0, buf);
strcat(buf, "\\.gphoto\\settings");
#else
snprintf (buf, sizeof(buf), "%s/.gphoto/settings", getenv ("HOME"));
#endif
GP_LOG_D ("Saving %i setting(s) to file \"%s\"", glob_setting_count, buf);
if ((f=fopen(buf, "w+"))==NULL) {
GP_LOG_E ("Can't open settings file for writing.");
return(0);
}
rewind(f);
while (x < glob_setting_count) {
fwrite(glob_setting[x].id, strlen(glob_setting[x].id),1,f);
fputc('=', f);
fwrite(glob_setting[x].key, strlen(glob_setting[x].key),1,f);
fputc('=', f);
fwrite(glob_setting[x].value, strlen(glob_setting[x].value),1,f);
fputc('\n', f);
x++;
}
fclose(f);
return (GP_OK);
}
#if 0
static int dump_settings (void)
{
int x;
gp_debug_printf(GP_DEBUG_LOW, "core", "All settings:");
for (x=0; x<glob_setting_count; x++)
gp_debug_printf(GP_DEBUG_LOW, "core", "\t (%s) \"%s\" = \"%s\"", glob_setting[x].id,
glob_setting[x].key,glob_setting[x].value);
if (glob_setting_count == 0)
gp_debug_printf(GP_DEBUG_LOW, "core", "\tNone");
gp_debug_printf(GP_DEBUG_LOW, "core", "Total settings: %i", glob_setting_count);
return (GP_OK);
}
#endif
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