ede/edelib2/Config.cpp

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/*
* $Id$
*
* edelib::Config - library for configuration management
* Part of Equinox Desktop Environment (EDE).
* Copyright (c) 2000-2006 EDE Authors.
*
* This program is licenced under terms of the
* GNU General Public Licence version 2 or newer.
* See COPYING for details.
*/
/*#include "fl_internal.h"
#include <efltk/vsnprintf.h>
#include <efltk/Fl_String_List.h>
#include <efltk/Fl_Exception.h>
#include <efltk/Fl_Config.h>
#include <efltk/filename.h>
#include <efltk/fl_utf8.h>*/
#include "Config.h"
#include <fltk/filename.h>
#include "NLS.h"
#include "../edeconf.h"
#include "Util.h"
/*#include <ctype.h>
#include <locale.h>*/
#include <errno.h>
/*#include <stdlib.h>
#include <stdio.h>*/
#include <sys/stat.h>
/*#ifdef _WIN32_WCE
#include <stdlibx.h>
#endif
//#include <config.h>
#ifdef _WIN32
# include <io.h>
# include <direct.h>
# include <windows.h>
# define access(a,b) _access(a,b)
# define mkdir(a,b) _mkdir(a)
# define R_OK 4
#else
# include <unistd.h>
#endif *//* _WIN32 */
#define LOCALE_TO_C() \
char *locale = setlocale(LC_ALL, ""); \
char *restore_locale = locale ? strdup(locale) : strdup("C"); \
setlocale(LC_ALL, "C")
#define RESTORE_LOCALE() \
setlocale(LC_ALL, restore_locale); \
free(restore_locale)
// From Enumerations.h
#ifdef _WIN32
# undef slash
# define slash '\\'
#else
# undef slash
# define slash '/'
#endif
// End Enumerations.h
using namespace fltk;
using namespace edelib;
// GLOBAL NOTE: asprintf() is a GNU extension - if it's unsupported on some
// platforms, use our tasprintf() instead (in Util.h)
// vec_from_string() - similar to explode() in PHP or split() in Perl
// adapted from Fl_String_List to use vector
std::vector<char*> vec_from_string(const char *str, const char *separator)
{
if(!str) return std::vector<char*> ();
uint separator_len = strlen(separator);
const char *ptr = str;
const char *s = strstr(ptr, separator);
std::vector<char*> retval;
if(s) {
do {
uint len = s - ptr;
if (len) {
retval.push_back(strndup(ptr,len));
} else {
retval.push_back(NULL);
}
ptr = s + separator_len;
s = strstr(ptr, separator);
}
while(s);
if(*ptr) {
retval.push_back(strdup(ptr));
}
} else {
retval.push_back(strdup(ptr));
}
return retval;
}
// Get filename with full path of config file
// TODO: mergeing of system and user config
char* Config::find_file(const char *filename, bool create, int mode)
{
static char path[PATH_MAX];
if(is_path_rooted(filename)) {
strncpy(path, filename, PATH_MAX);
return (create || !access(path, R_OK)) ? path : 0;
}
if(mode==USER) {
const char *cptr = getenv("HOME");
char *ret=0;
if(cptr) {
snprintf(path, PATH_MAX-1, "%s%c%s%c%s", cptr, slash, ".ede", slash, filename);
if(create || !access(path, R_OK)) {
ret = path;
}
return ret;
}
return 0;
} else {
snprintf(path, sizeof(path)-1, "%s%c%s", get_sys_dir(), slash, filename);
return (create || !access(path, R_OK)) ? path : 0;
}
}
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
#define S(item) ((Config_Section*)item)
Config::Config(const char *vendor, const char *application, int mode)
: Config_Section("","",0)
{
m_vendor=m_app=m_filename=NULL;
m_cur_sec = 0;
m_changed=false;
m_error = 0;
if(vendor) m_vendor = strdup(vendor);
if(application) m_app = strdup(application);
if(strlen(m_app) > 0)
{
const char *file=0;
char tmp[PATH_MAX];
#ifdef _WIN32
if(mode==SYSTEM)
snprintf(tmp, sizeof(tmp)-1, "%s%c%s.conf", m_app, slash, m_app);
else
#endif
snprintf(tmp, sizeof(tmp)-1, "apps%c%s%c%s.conf", slash, m_app, slash, m_app);
file = find_file(tmp, true, mode);
if(file)
{
bool ret = make_path_for_file(file);
if(ret)
{
m_filename = strdup(file);
read_file(true);
} else
m_error = CONF_ERR_FILE;
} else
m_error = CONF_ERR_FILE;
} else
m_error = CONF_ERR_FILE;
}
Config::Config(const char *filename, bool read, bool create)
: Config_Section("","",0)
{
m_vendor=m_app=m_filename=NULL;
if(filename) m_filename = strdup(filename); else m_filename = strdup("");
// TODO: shouldn't we just return false if there's no filename??
// use case: creating a new file (nonexistant)
m_error = 0;
m_cur_sec = 0;
m_changed=false;
if(create && strlen(m_filename)>0) {
make_path_for_file(m_filename);
}
if(read) read_file(create);
}
Config::~Config()
{
flush();
clear();
if(m_filename) free(m_filename);
if(m_vendor) free(m_vendor);
if(m_app) free(m_app);
}
/* get error string associated with error number */
const char *Config::strerror(int error)
{
switch(error)
{
case CONF_SUCCESS: return _("Successful operation");
case CONF_ERR_FILE: return _("Could not access config file");
case CONF_ERR_SECTION: return _("Config file section not found");
case CONF_ERR_KEY: return _("Key not found in section");
case CONF_ERR_MEMORY: return _("Could not allocate memory");
case CONF_ERR_NOVALUE: return _("Invalid value associated with key");
default: return _("Unknown error");
}
}
bool Config::read_file(bool create)
{
bool error = false;
if(m_filename && strlen(m_filename)<1) {
m_error = CONF_ERR_FILE;
return false;
}
if(create && !(access(m_filename, F_OK)==0)) {
FILE *f = fopen(m_filename, "w+");
if(f) {
fputs(" ", f);
fclose(f);
} else error=true;
}
if(error) {
m_error = CONF_ERR_FILE;
return false;
}
// If somebody calls this function two times, we
// need to clean earlier section list...
clear();
/////
struct stat fileStat;
stat(m_filename, &fileStat);
uint size = fileStat.st_size;
if(size == 0) {
m_error = 0;
return true;
}
FILE *fp = fopen(m_filename, "r");
if(!fp) {
//fprintf(stderr, "fp == 0: %s\n", m_filename);
m_error = CONF_ERR_FILE;
return false;
}
uint bsize = size*sizeof(char);
char *buffer = (char*)malloc(bsize+1);
buffer[bsize] = 0;
if(!buffer) {
m_error = CONF_ERR_MEMORY;
return false;
}
uint readed = fread(buffer, 1, size, fp);
if(readed <= 0) {
free((char*)buffer);
fclose(fp);
m_error = CONF_ERR_FILE;
return false;
}
fclose(fp);
/* old parser
String_List strings(buffer, "\n");
free((char*)buffer);
Config_Section *section = this;
for(uint n=0; n<strings.size(); n++)
{
String line;
int comment_pos = strings[n].rpos('#');
if(comment_pos>=0) {
line = strings[n].sub_str(comment_pos, strings[n].length()-comment_pos).trim();
} else {
line = strings[n].trim();
}
if(line[0] == '[')
{
int pos = line.pos(']');
if(pos>=0)
{
String sec(line.sub_str(1, pos-1));
section = create_section(sec);
}
}
else if(line[0] != '#')
{
int pos = line.pos('=');
if(pos==-1) pos = line.pos(':');
if(pos>=0) {
String key(line.sub_str(0, pos));
pos++;
String value(line.sub_str(pos, line.length()-pos));
section->add_entry(key, value);
}
}
}
*/
// new parser by Vedran
// I like writing parsers
// too bad others don't like me writing parsers...
// TODO: i did some stupid things here for debugging, need to check
int pos=0;
bool comment, iskey, issection;
const uint maxlen=4096;
char key[maxlen], value[maxlen], sectionname[maxlen];
key[0]='\0'; value[0]='\0'; sectionname[0]='\0';
Config_Section *section = this;
do {
int c=buffer[pos];
if ((c == '\n') || (c == '\0')) {
comment=false; iskey=true; issection=false;
wstrim(sectionname);
wstrim(key);
wstrim(value);
if (strlen(sectionname) > 0)
section = create_section(sectionname);
if (strlen(key) > 0)
section->add_entry(key,value);
key[0]='\0'; value[0]='\0'; sectionname[0]='\0';
}
else if (c == '#')
comment = true;
else if (comment == false) {
if (c == '[')
issection = true;
else if (c == ']')
issection = false;
else if ((c == '=') || (c == ':'))
iskey = false;
else {
if (issection)
if (maxlen>strlen(sectionname)+strlen((const char*) &c))
strcat(sectionname, (const char*) &c);
else if (iskey)
if (maxlen>strlen(key)+strlen((const char*) &c))
strcat(key, (const char*) &c);
else
if (maxlen>strlen(value)+strlen((const char*) &c))
strcat(value, (const char*) &c);
}
}
pos++;
} while (buffer[pos] != '\0');
m_error = 0;
m_changed=false;
return true;
}
bool Config::flush()
{
if(!m_changed) return true;
if(strlen(m_filename) < 1) return false;
FILE *file = fopen(m_filename, "w+");
// if(!file)
// fl_throw(::strerror(errno));
LOCALE_TO_C();
fprintf(file, "# EDE INI Version %s\n", PACKAGE_VERSION);
if(m_vendor && strlen(m_vendor)>0) fprintf(file, "# Vendor: %s\n", m_vendor);
if(m_app && strlen(m_app)>0) fprintf(file, "# Application: %s\n", m_app);
// Flush sections
write_section(0, file);
RESTORE_LOCALE();
fclose(file);
m_error = 0;
m_changed=false;
return true;
}
Config_Section *Config::create_section(const char* name)
{
if(strlen(name)<1) return 0;
Config_Section *section = find_section(name, true);
if(section) return section;
char *lastptr = strrchr(name,'/'); // int pos = name.rpos('/')+1;
int pos;
if(lastptr) {
pos = lastptr-name + 1;
} else {
section = new Config_Section(name, "", 0);
sections().push_back(section);
return section;
}
//char* sec_name(name.sub_str(pos, name.length()-pos));
char *sec_name = strndup(name+pos, strlen(name)-pos);
//char* sec_path(name.sub_str(0, pos));
char *sec_path = strndup(name, pos);
Config_Section *parent = find_section(sec_path, false);
Config_Sections *list = &sections();
if(!parent) {
// Fl_String_List sections;
std::vector<char*> sections = vec_from_string(sec_path, "/");
char path[PATH_MAX];
path[0]='\0';
for(uint n=0; n<sections.size(); n++) {
if(parent) list = &parent->sections();
parent = new Config_Section(sections.at(n), path, parent);
list->push_back(parent);
if (PATH_MAX>strlen(path)+strlen(sections.at(n))+1) {
strcat(path, sections.at(n));
strcat(path, "/");
}
}
}
if(parent) list = &parent->sections();
section = new Config_Section(sec_name, sec_path, parent);
list->push_back(section);
free(sec_name); free(sec_path);
m_error = 0;
return section;
}
Config_Section *Config::find_section(const char *path, bool perfect_match) const
{
if(!path || !*path) return 0;
std::vector<char*> sections = vec_from_string(path, "/");
if(sections.size()==0)
return find(path, false);
Config_Section *section = (Config_Section *)this;
for(uint n=0; n<sections.size(); n++) {
Config_Section *tmp = section->find(sections.at(n), false);
if(!tmp) {
if(perfect_match)
return 0;
else
break;
}
section = tmp;
}
return section;
}
void Config::remove_key(const char *section, const char *key)
{
if(key) {
Config_Section *sect = find_section(section, true);
if(sect->remove_entry(key)) {
m_error = 0;
m_changed = true;
return;
}
}
m_error = CONF_ERR_KEY;
}
// finding and removing stuff from deque
void sectremove(Config_Sections sects, Config_Section *sect)
{
for (uint n=0; n<sects.size(); n++) {
Config_Section *current = (Config_Section *)sects.at(n);
if (current == sect)
sects.erase(sects.begin()+n);
}
return;
}
void Config::remove_sec(const char *section)
{
if(!section) return;
Config_Section *sect;
if((sect = find_section(section, true)) != 0) {
if(sect->parent()) {
sectremove(sect->parent()->sections(),sect);
} else {
sectremove(sections(),sect);
}
delete sect;
m_error = 0;
m_changed = true;
return;
}
m_error = CONF_ERR_SECTION;
}
/*
* Read functions
*/
int Config::_read_string(Config_Section *s, const char *key, char *ret, const char *def_value, int size)
{
if(!key || !s) {
if(def_value) strncpy(ret, def_value, size);
else ret[0] = '\0';
m_error = (!key ? CONF_ERR_KEY : CONF_ERR_SECTION);
return m_error;
}
char *val = s->find_entry(key);
if(val) {
int len = strlen(val); // convert from unsigned... and now:
len = (len<size) ? len+1 : size;
memcpy(ret, val, len);
return (m_error = CONF_SUCCESS);
}
free(val);
if(def_value) strncpy(ret, def_value, size);
else ret[0] = '\0';
m_error = CONF_ERR_KEY;
return m_error;
}
int Config::_read_string(Config_Section *s, const char *key, char *&ret, const char *def_value)
{
if(!key || !s) {
if (def_value) ret=strdup(def_value); else ret=0;
if (!key) m_error = CONF_ERR_KEY; else m_error = CONF_ERR_SECTION;
return m_error;
}
char *val = s->find_entry(key);
if(val && strlen(val)>0)
{
ret = strdup(val);
return (m_error = CONF_SUCCESS);
}
free(val);
if (def_value) ret = strdup(def_value); else ret=0;
m_error = CONF_ERR_KEY;
return m_error;
}
/*int Config::_read_string(Config_Section *s, const char *key, Fl_String &ret, const char *def_value)
{
if(!key || !s) {
ret = def_value;
m_error = !key ? CONF_ERR_KEY : CONF_ERR_SECTION;
return m_error;
}
Fl_String *val = s->find_entry(key);
if(val) {
ret = (*val);
return (m_error = CONF_SUCCESS);
}
ret = def_value;
return (m_error = CONF_ERR_KEY);
}*/
int Config::_read_long(Config_Section *s, const char *key, long &ret, long def_value)
{
char* tmp;
if(!_read_string(s, key, tmp, 0))
if (tmp[0]) ret=strtol(tmp, NULL, 10); else ret=def_value;
else
ret = def_value;
return m_error;
}
int Config::_read_int(Config_Section *s, const char *key, int &ret, int def_value)
{
char* tmp;
if(!_read_string(s, key, tmp, 0)) {
ret = atoi(tmp);
if ((errno == ERANGE) || (ret == 0 && strcmp(tmp,"0") != 0)) ret = def_value;
} else
ret = def_value;
return m_error;
}
int Config::_read_float (Config_Section *s, const char *key, float &ret, float def_value)
{
char* tmp;
if(!_read_string(s, key, tmp, 0)) {
LOCALE_TO_C();
ret = (float)strtod(tmp, 0);
RESTORE_LOCALE();
} else
ret = def_value;
return m_error;
}
int Config::_read_double(Config_Section *s, const char *key, double &ret, double def_value)
{
char* tmp;
if(!_read_string(s, key, tmp, 0)) {
LOCALE_TO_C();
ret = strtod(tmp, 0);
RESTORE_LOCALE();
} else
ret = def_value;
return m_error;
}
int Config::_read_bool(Config_Section *s, const char *key, bool &ret, bool def_value)
{
char* tmp;
if(_read_string(s, key, tmp, 0)) {
ret = def_value;
return m_error;
}
if ((strncasecmp(tmp,"true",4)==0)
|| (strncasecmp(tmp,"yes",3)==0)
|| (strncasecmp(tmp,"on",2)==0)
|| (strcasecmp(tmp,"1")==0)) {
ret = true;
} else if((strncasecmp(tmp,"false",5)==0)
|| (strncasecmp(tmp,"no",2)==0)
|| (strncasecmp(tmp,"off",3)==0)
|| (strcasecmp(tmp,"0")==0)) {
ret = false;
} else {
m_error = CONF_ERR_NOVALUE;
ret = def_value;
}
return m_error;
}
int Config::_read_color(Config_Section *s, const char *key, Color &ret, Color def_value)
{
char* tmp;
if(_read_string(s, key, tmp, 0)) {
ret = def_value;
return m_error;
}
int r=0,g=0,b=0;
if(sscanf(tmp, "RGB(%d,%d,%d)", &r, &g, &b)!=3) {
ret = def_value;
return (m_error = CONF_ERR_NOVALUE);
}
ret = color(r,g,b);
return m_error;
}
/*
* Write functions
*/
/*int Config::_write_string(Config_Section *s, const char *key, const char *value)
{
char* val(value);
return _write_string(s, key, val);
}*/
int Config::_write_string(Config_Section *s, const char *key, const char* value)
{
if(!s) return (m_error = CONF_ERR_SECTION);
if(!key) return (m_error = CONF_ERR_KEY);
/* This logic is now in add_entry, cause we can't pass around pointers into structure
char *val = s->find_entry(key);
if(val) {
strncpy(val, value, strlen(value));
} else */
if (value) s->add_entry(key, value); else s->add_entry(key, "");
m_changed=true;
return (m_error=CONF_SUCCESS);
}
int Config::_write_long(Config_Section *s, const char *key, const long value)
{
return _write_string(s, key, tsprintf("%ld", value));
}
int Config::_write_int(Config_Section *s, const char *key, const int value)
{
return _write_string(s, key, tsprintf("%d", value));
}
int Config::_write_float(Config_Section *s, const char *key, const float value)
{
LOCALE_TO_C();
char tmp[32]; snprintf(tmp, sizeof(tmp)-1, "%g", value);
RESTORE_LOCALE();
return _write_string(s, key, tmp);
}
int Config::_write_double(Config_Section *s, const char *key, const double value)
{
LOCALE_TO_C();
char tmp[32]; snprintf(tmp, sizeof(tmp)-1, "%g", value);
RESTORE_LOCALE();
return _write_string(s, key, tmp);
}
int Config::_write_bool(Config_Section *s, const char *key, const bool value)
{
if(value) return _write_string(s, key, "1");
return _write_string(s, key, "0");
}
int Config::_write_color(Config_Section *s, const char *key, const Color value)
{
unsigned char r,g,b;
split_color(value, r,g,b);
return _write_string(s, key, tsprintf("RGB(%d,%d,%d)", r,g,b));
}
//////////////////////////////////////
//////////////////////////////////////
//////////////////////////////////////
Config_Section::Config_Section(const char* name, const char* path, Config_Section *par)
: m_parent(par)
{
m_name=strdup(name);
m_path=strdup(path);
}
Config_Section::~Config_Section()
{
free(m_name);
free(m_path);
clear();
}
void Config_Section::clear()
{
for(uint n=0; n<sections().size(); n++) {
Config_Section *s = (Config_Section *)sections()[n];
delete s;
}
m_lines.clear();
m_sections.clear();
}
void Config_Section::write_section(int indent, FILE *fp) const
{
for(int a=0; a<indent; a++) fprintf(fp, " ");
if(strlen(name())>0)
fprintf(fp, "[%s%s]\n", path(), name());
for(uint n=0; n<m_lines.size(); n++) {
if(strlen(m_lines.at(n)) > 0) {
for(int a=0; a<indent; a++) fprintf(fp, " ");
// fprintf(fp, " %s=%s\n", it.id().c_str(), it.value().c_str());
fprintf(fp, " %s\n", m_lines.at(n));
}
}
fprintf(fp, "\n");
for(uint n=0; n<sections().size(); n++) {
Config_Section *child = S(sections()[n]);
child->write_section(indent+2, fp);
}
}
void Config_Section::add_entry(const char* key, const char* value)
{
if(!key || strlen(key)<1) return;
if(!value) return;
char *kvpair;
asprintf(&kvpair,"%s=%s",twstrim(key),twstrim(value));
// if key already exists, delete
bool found = false;
for (uint i=0; i<lines().size(); i++) {
if (!found && strncmp(lines().at(i), kvpair, strlen(kvpair)) == 0) {
lines().erase(lines().begin()+i);
found = true;
}
}
lines().push_back(kvpair);
}
bool Config_Section::remove_entry(const char* key)
{
if (!key || strlen(key)<1) return false;
bool found=false;
char *search;
asprintf(&search,"%s=",twstrim(key));
for (uint i=0; i<lines().size(); i++) {
if (strncmp(lines().at(i), search, strlen(search)) == 0) {
lines().erase(lines().begin()+i);
found=true;
}
}
free(search);
return found;
}
char* Config_Section::find_entry(const char *key) const
{
if (!key || strlen(key)<1) return 0;
bool found=false;
char *ret;
char *search;
asprintf(&search,"%s=",twstrim(key));
for (uint i=0; i<lines().size(); i++) {
if (!found && strncmp(lines().at(i), search, strlen(search)) == 0) {
ret = strdup(lines().at(i)+strlen(search));
found = true;
}
}
free(search); // this sometimes fails, dunno why....
if (found) { return ret; } else { return 0; }
}
Config_Section *Config_Section::find(const char *name, bool recursive) const
{
const Config_Sections *list = &sections();
if (!name) return 0;
for(uint n=0; n<list->size(); n++) {
Config_Section *s = (Config_Section*) list->at(n);
if(strncmp(s->name(), name, strlen(name)) == 0)
return s;
if(recursive) {
s = s->find(name, recursive);
if(s) return s;
}
}
return 0;
}