ede/ede-panel/applets/start-menu/DesktopEntry.cpp

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#include <string.h>
#include <edelib/Util.h>
#include <edelib/StrUtil.h>
#include <edelib/Directory.h>
#include <edelib/DesktopFile.h>
#include "DesktopEntry.h"
EDELIB_NS_USING(DesktopFile)
EDELIB_NS_USING(build_filename)
EDELIB_NS_USING(stringtok)
EDELIB_NS_USING(DESK_FILE_TYPE_APPLICATION)
static int age_counter = 1;
/*
* expands Exec key according to Desktop Entry Specification; only '%i' and '%c' codes are expanded
* since other requests files parameter for the executable
*
* TODO: this should be in edelib
*/
static String *expand_exec(const char *cmd, DesktopEntry *en) {
E_RETURN_VAL_IF_FAIL(cmd != NULL, NULL);
E_RETURN_VAL_IF_FAIL(en != NULL, NULL);
int len = strlen(cmd);
E_RETURN_VAL_IF_FAIL(len > 1, NULL);
String *tmp = new String;
const char *ptr = cmd;
tmp->reserve(len);
for(; *ptr; ptr++) {
if(*ptr == '%') {
ptr++;
switch(*ptr) {
case '%':
tmp->append(1, *ptr);
break;
case 'i':
tmp->append(en->get_icon());
break;
case 'c':
tmp->append(en->get_name());
break;
case 0:
/* end of the string */
goto done;
break;
default:
/* every other code is ignored */
break;
}
} else {
/* characters that must be quoted */
if(strchr("`$<>~|&;*#?()", *ptr) != NULL)
tmp->append("\\\\");
/* backslash is special */
else if(*ptr == '\\')
tmp->append("\\\\\\");
tmp->append(1, *ptr);
}
}
done:
return tmp;
}
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DesktopEntry::~DesktopEntry() {
delete path;
delete id;
delete categories;
delete name;
delete generic_name;
delete comment;
delete icon;
delete exec_cmd;
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}
void DesktopEntry::assign_path(const char *dir, const char *p, const char *basedir) {
E_ASSERT(dir != NULL);
E_ASSERT(p != NULL);
/* make sure we do not assign things twice */
E_RETURN_IF_FAIL(path == NULL);
E_RETURN_IF_FAIL(id == NULL);
const char *ptr;
String *spath, *sid;
/* full path */
spath = new String(build_filename(dir, p));
ptr = spath->c_str();
/* if we have basedir, skip directory path by jumping the size of basedir */
if(basedir) {
ptr += strlen(basedir);
/* skip ending delimiters */
while(*ptr == E_DIR_SEPARATOR)
ptr++;
}
sid = new String(ptr);
/* replace existing separators; this is in the spec */
sid->replace(E_DIR_SEPARATOR, '-');
path = spath;
id = sid;
age = age_counter++;
}
bool DesktopEntry::load(void) {
E_RETURN_VAL_IF_FAIL(path != NULL, false);
DesktopFile df;
if(!df.load(path->c_str())) {
E_WARNING(E_STRLOC ": Unable to load %s\n", path->c_str());
return false;
}
/* check if we are 'Hidden = true' or 'NoDisplay = true'; these must not be loaded */
if(df.hidden() || df.no_display())
return false;
char buf[128];
/* should it be shown in EDE */
if(df.only_show_in(buf, sizeof(buf))) {
if(strstr(buf, "EDE") == NULL)
return false;
}
if(df.not_show_in(buf, sizeof(buf))) {
if(strstr(buf, "EDE") != NULL)
return false;
}
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/* it must be application type */
E_RETURN_VAL_IF_FAIL(df.type() == DESK_FILE_TYPE_APPLICATION, false);
/* name must be present too */
E_RETURN_VAL_IF_FAIL(df.name(buf, sizeof(buf)) == true, false);
name = new String(buf);
/* optional */
if(df.get("Desktop Entry", "Categories", buf, sizeof(buf)))
categories = new String(buf);
if(df.generic_name(buf, sizeof(buf)))
generic_name = new String(buf);
if(df.comment(buf, sizeof(buf)))
comment = new String(buf);
if(df.icon(buf, sizeof(buf)))
icon = new String(buf);
if(df.exec(buf, sizeof(buf)))
exec_cmd = expand_exec(buf, this);
/* executable wasn't found on system or expand_exec() somehow failed; do not put it in the menu */
if(!exec_cmd)
return false;
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return true;
}
bool DesktopEntry::in_category(const char *cat) {
E_RETURN_VAL_IF_FAIL(cat != NULL, false);
if(!categories)
return false;
StrListIt it, it_end;
if(category_list.empty()) {
stringtok(category_list, *categories, ";");
/* remove starting/ending spaces if exists */
it = category_list.begin();
it_end = category_list.end();
for(; it != it_end; ++it)
(*it).trim();
}
it = category_list.begin();
it_end = category_list.end();
for(; it != it_end; ++it) {
if((*it) == cat)
return true;
}
return false;
}
/* TODO: bug in edelib */
static bool id_age_sorter(DesktopEntry* const& u1, DesktopEntry* const& u2) {
return (strcmp(u1->get_id(), u2->get_id()) < 0) && (u1->get_age() < u2->get_age());
}
/* TODO: bug in edelib */
static bool name_sorter(DesktopEntry* const& u1, DesktopEntry* const& u2) {
return (strcmp(u1->get_name(), u2->get_name()) < 0);
}
void desktop_entry_list_remove_duplicates(DesktopEntryList &lst) {
if(lst.empty())
return;
/* sort them respecting name and age */
lst.sort(id_age_sorter);
DesktopEntryListIt it = lst.begin(), it_end = lst.end();
DesktopEntryListIt next = it;
/* do consecutive unique */
while(++next != it_end) {
if(strcmp((*it)->get_id(), (*next)->get_id()) == 0) {
delete *next;
lst.erase(next);
} else {
it = next;
}
next = it;
}
}
void desktop_entry_list_load_all(DesktopEntryList &lst) {
if(lst.empty())
return;
DesktopEntryListIt it = lst.begin(), it_end = lst.end();
while(it != it_end) {
if(!(*it)->load()) {
delete *it;
it = lst.erase(it);
} else {
++it;
}
}
}
void desktop_entry_list_sort(DesktopEntryList &lst) {
lst.sort(name_sorter);
}