fluxbox/util/fluxbox-update_configs.cc
2014-04-11 17:42:40 +02:00

732 lines
26 KiB
C++

// fluxbox-update_configs.cc
// Copyright (c) 2007 Fluxbox Team (fluxgen at fluxbox dot org)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
#include "../src/FbTk/I18n.hh"
#include "../src/FbTk/Resource.hh"
#include "../src/FbTk/StringUtil.hh"
#include "../src/FbTk/FileUtil.hh"
#include "../src/defaults.hh"
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif // HAVE_SIGNAL_H
#ifdef HAVE_CSTRING
#include <cstring>
#else
#include <string.h>
#endif
#include <sys/stat.h>
#include <iostream>
#include <fstream>
#include <set>
#include <map>
#include <cstdlib>
#include <list>
using std::cout;
using std::cerr;
using std::endl;
using std::string;
using std::ifstream;
using std::ofstream;
using std::set;
using std::map;
using std::list;
using std::exit;
string read_file(const string& filename);
void write_file(const string& filename, const string &contents);
void save_all_files();
/*------------------------------------------------------------------*\
\*------------------------------------------------------------------*/
void update_add_mouse_evens_to_keys(FbTk::ResourceManager& rm,
const FbTk::FbString& keyfilename, const FbTk::FbString& appsfilename) {
string whole_keyfile = read_file(keyfilename);
string new_keyfile = "";
// let's put our new keybindings first, so they're easy to find
new_keyfile += "!mouse actions added by fluxbox-update_configs\n";
new_keyfile += "OnDesktop Mouse1 :HideMenus\n";
new_keyfile += "OnDesktop Mouse2 :WorkspaceMenu\n";
new_keyfile += "OnDesktop Mouse3 :RootMenu\n";
// scrolling on desktop needs to match user's desktop wheeling settings
// hmmm, what are the odds that somebody wants this to be different on
// different screens? the ability is going away until we make per-screen
// keys files, anyway, so let's just use the first screen's setting
FbTk::Resource<bool> rc_wheeling(rm, true,
"session.screen0.desktopwheeling",
"Session.Screen0.DesktopWheeling");
FbTk::Resource<bool> rc_reverse(rm, false,
"session.screen0.reversewheeling",
"Session.Screen0.ReverseWheeling");
if (*rc_wheeling) {
if (*rc_reverse) { // if you ask me, this should have been default
new_keyfile += "OnDesktop Mouse4 :PrevWorkspace\n";
new_keyfile += "OnDesktop Mouse5 :NextWorkspace\n";
} else {
new_keyfile += "OnDesktop Mouse4 :NextWorkspace\n";
new_keyfile += "OnDesktop Mouse5 :PrevWorkspace\n";
}
}
new_keyfile += "\n"; // just for good looks
new_keyfile += whole_keyfile; // don't forget user's old keybindings
write_file(keyfilename, new_keyfile);
}
void update_move_groups_entries_to_apps_file(FbTk::ResourceManager& rm,
const FbTk::FbString& keyfilename, const FbTk::FbString& appsfilename) {
FbTk::Resource<string> rc_groupfile(rm, "~/.fluxbox/groups",
"session.groupFile", "Session.GroupFile");
string groupfilename = FbTk::StringUtil::expandFilename(*rc_groupfile);
string whole_groupfile = read_file(groupfilename);
string whole_appsfile = read_file(appsfilename);
string new_appsfile = "";
list<string> lines;
FbTk::StringUtil::stringtok(lines, whole_groupfile, "\n");
list<string>::iterator line_it = lines.begin();
list<string>::iterator line_it_end = lines.end();
for (; line_it != line_it_end; ++line_it) {
new_appsfile += "[group] (workspace=[current])\n";
list<string> apps;
FbTk::StringUtil::stringtok(apps, *line_it);
list<string>::iterator it = apps.begin();
list<string>::iterator it_end = apps.end();
for (; it != it_end; ++it) {
new_appsfile += " [app] (name=";
new_appsfile += *it;
new_appsfile += ")\n";
}
new_appsfile += "[end]\n";
}
new_appsfile += whole_appsfile;
write_file(appsfilename, new_appsfile);
}
void update_move_toolbar_wheeling_to_keys_file(FbTk::ResourceManager& rm,
const FbTk::FbString& keyfilename, const FbTk::FbString& appsfilename) {
string whole_keyfile = read_file(keyfilename);
string new_keyfile = "";
// let's put our new keybindings first, so they're easy to find
new_keyfile += "!mouse actions added by fluxbox-update_configs\n";
bool keep_changes = false;
// scrolling on toolbar needs to match user's toolbar wheeling settings
FbTk::Resource<string> rc_wheeling(rm, "Off",
"session.screen0.iconbar.wheelMode",
"Session.Screen0.Iconbar.WheelMode");
FbTk::Resource<bool> rc_screen(rm, true,
"session.screen0.desktopwheeling",
"Session.Screen0.DesktopWheeling");
FbTk::Resource<bool> rc_reverse(rm, false,
"session.screen0.reversewheeling",
"Session.Screen0.ReverseWheeling");
if (strcasecmp((*rc_wheeling).c_str(), "On") == 0 ||
(strcasecmp((*rc_wheeling).c_str(), "Screen") == 0 && *rc_screen)) {
keep_changes = true;
if (*rc_reverse) { // if you ask me, this should have been default
new_keyfile += "OnToolbar Mouse4 :PrevWorkspace\n";
new_keyfile += "OnToolbar Mouse5 :NextWorkspace\n";
} else {
new_keyfile += "OnToolbar Mouse4 :NextWorkspace\n";
new_keyfile += "OnToolbar Mouse5 :PrevWorkspace\n";
}
}
new_keyfile += "\n"; // just for good looks
new_keyfile += whole_keyfile; // don't forget user's old keybindings
if (keep_changes)
write_file(keyfilename, new_keyfile);
}
void update_move_modkey_to_keys_file(FbTk::ResourceManager& rm,
const FbTk::FbString& keyfilename, const FbTk::FbString& appsfilename) {
string whole_keyfile = read_file(keyfilename);
string new_keyfile = "";
// let's put our new keybindings first, so they're easy to find
new_keyfile += "!mouse actions added by fluxbox-update_configs\n";
// need to match user's resize model
FbTk::Resource<string> rc_mode(rm, "Bottom",
"session.screen0.resizeMode",
"Session.Screen0.ResizeMode");
FbTk::Resource<string> rc_modkey(rm, "Mod1",
"session.modKey",
"Session.ModKey");
new_keyfile += "OnWindow " + *rc_modkey +
" Mouse1 :MacroCmd {Raise} {Focus} {StartMoving}\n";
new_keyfile += "OnWindow " + *rc_modkey +
" Mouse3 :MacroCmd {Raise} {Focus} {StartResizing ";
if (strcasecmp((*rc_mode).c_str(), "Quadrant") == 0) {
new_keyfile += "NearestCorner}\n";
} else if (strcasecmp((*rc_mode).c_str(), "Center") == 0) {
new_keyfile += "Center}\n";
} else {
new_keyfile += "BottomRight}\n";
}
new_keyfile += "\n"; // just for good looks
new_keyfile += whole_keyfile; // don't forget user's old keybindings
write_file(keyfilename, new_keyfile);
}
void update_window_patterns_for_iconbar(FbTk::ResourceManager& rm,
const FbTk::FbString& keyfilename, const FbTk::FbString& appsfilename) {
// this needs to survive after going out of scope
// it won't get freed, but that's ok
FbTk::Resource<string> *rc_mode =
new FbTk::Resource<string>(rm, "Workspace",
"session.screen0.iconbar.mode",
"Session.Screen0.Iconbar.Mode");
std::string mode = FbTk::StringUtil::toLower(**rc_mode);
if (mode == "none")
*rc_mode = "none";
else if (mode == "icons")
*rc_mode = "{static groups} (minimized=yes)";
else if (mode == "noicons")
*rc_mode = "{static groups} (minimized=no)";
else if (mode == "workspaceicons")
*rc_mode = "{static groups} (minimized=yes) (workspace)";
else if (mode == "workspacenoicons")
*rc_mode = "{static groups} (minimized=no) (workspace)";
else if (mode == "allwindows")
*rc_mode = "{static groups}";
else
*rc_mode = "{static groups} (workspace)";
}
void update_move_titlebar_actions_to_keys_file(FbTk::ResourceManager& rm,
const FbTk::FbString& keyfilename, const FbTk::FbString& appsfilename) {
string whole_keyfile = read_file(keyfilename);
string new_keyfile = "";
// let's put our new keybindings first, so they're easy to find
new_keyfile += "!mouse actions added by fluxbox-update_configs\n";
new_keyfile += "OnTitlebar Double Mouse1 :Shade\n";
new_keyfile += "OnTitlebar Mouse3 :WindowMenu\n";
FbTk::Resource<bool> rc_reverse(rm, false,"session.screen0.reversewheeling", "Session.Screen0.ReverseWheeling");
FbTk::Resource<std::string> scroll_action(rm, "", "session.screen0.windowScrollAction", "Session.Screen0.WindowScrollAction");
if (strcasecmp((*scroll_action).c_str(), "shade") == 0) {
if (*rc_reverse) {
new_keyfile += "OnTitlebar Mouse5 :ShadeOn\n";
new_keyfile += "OnTitlebar Mouse4 :ShadeOff\n";
} else {
new_keyfile += "OnTitlebar Mouse4 :ShadeOn\n";
new_keyfile += "OnTitlebar Mouse5 :ShadeOff\n";
}
} else if (strcasecmp((*scroll_action).c_str(), "nexttab") == 0) {
if (*rc_reverse) {
new_keyfile += "OnTitlebar Mouse5 :PrevTab\n";
new_keyfile += "OnTitlebar Mouse4 :NextTab\n";
} else {
new_keyfile += "OnTitlebar Mouse4 :PrevTab\n";
new_keyfile += "OnTitlebar Mouse5 :NextTab\n";
}
}
new_keyfile += "\n"; // just for good looks
new_keyfile += whole_keyfile; // don't forget user's old keybindings
write_file(keyfilename, new_keyfile);
}
void update_added_starttabbing_command(FbTk::ResourceManager& rm,
const FbTk::FbString& keyfilename, const FbTk::FbString& appsfilename) {
string whole_keyfile = read_file(keyfilename);
string new_keyfile = "";
// let's put our new keybindings first, so they're easy to find
new_keyfile += "!mouse actions added by fluxbox-update_configs\n";
new_keyfile += "OnTitlebar Mouse2 :StartTabbing\n\n";
new_keyfile += whole_keyfile; // don't forget user's old keybindings
write_file(keyfilename, new_keyfile);
}
void update_disable_icons_in_tabs_for_backwards_compatibility(FbTk::ResourceManager& rm,
const FbTk::FbString& keyfilename, const FbTk::FbString& appsfilename) {
FbTk::Resource<bool> *show =
new FbTk::Resource<bool>(rm, false,
"session.screen0.tabs.usePixmap",
"Session.Screen0.Tabs.UsePixmap");
if (!*show) // only change if the setting didn't already exist
*show = false;
}
void update_change_format_of_split_placement_menu(FbTk::ResourceManager& rm,
const FbTk::FbString& keyfilename, const FbTk::FbString& appsfilename) {
FbTk::Resource<string> *placement =
new FbTk::Resource<string>(rm, "BottomRight",
"session.screen0.slit.placement",
"Session.Screen0.Slit.Placement");
FbTk::Resource<string> *direction =
new FbTk::Resource<string>(rm, "Vertical",
"session.screen0.slit.direction",
"Session.Screen0.Slit.Direction");
if (strcasecmp((**direction).c_str(), "vertical") == 0) {
if (strcasecmp((**placement).c_str(), "BottomRight") == 0)
*placement = "RightBottom";
else if (strcasecmp((**placement).c_str(), "BottomLeft") == 0)
*placement = "LeftBottom";
else if (strcasecmp((**placement).c_str(), "TopRight") == 0)
*placement = "RightTop";
else if (strcasecmp((**placement).c_str(), "TopLeft") == 0)
*placement = "LeftTop";
}
}
void update_update_keys_file_for_nextwindow_syntax_changes(FbTk::ResourceManager& rm,
const FbTk::FbString& keyfilename, const FbTk::FbString& appsfilename) {
string whole_keyfile = read_file(keyfilename);
size_t pos = 0;
while (true) {
const char *keyfile = whole_keyfile.c_str();
const char *loc = 0;
size_t old_pos = pos;
// find the first position that matches any of next/prevwindow/group
if ((loc = FbTk::StringUtil::strcasestr(keyfile + old_pos,
"nextwindow")))
pos = (loc - keyfile) + 10;
if ((loc = FbTk::StringUtil::strcasestr(keyfile + old_pos,
"prevwindow")))
pos = (pos > old_pos && keyfile + pos < loc) ?
pos : (loc - keyfile) + 10;
if ((loc = FbTk::StringUtil::strcasestr(keyfile + old_pos,
"nextgroup")))
pos = (pos > old_pos && keyfile + pos < loc) ?
pos : (loc - keyfile) + 9;
if ((loc = FbTk::StringUtil::strcasestr(keyfile + old_pos,
"prevgroup")))
pos = (pos > old_pos && keyfile + pos < loc) ?
pos : (loc - keyfile) + 9;
if (pos == old_pos)
break;
pos = whole_keyfile.find_first_not_of(" \t", pos);
if (pos != std::string::npos && isdigit(whole_keyfile[pos])) {
char *endptr = 0;
unsigned int mask = strtoul(keyfile + pos, &endptr, 0);
string insert = "";
if ((mask & 9) == 9)
insert = "{static groups}";
else if (mask & 1)
insert = "{groups}";
else if (mask & 8)
insert = "{static}";
if (mask & 2)
insert += " (stuck=no)";
if (mask & 4)
insert += " (shaded=no)";
if (mask & 16)
insert += " (minimized=no)";
if (mask)
whole_keyfile.replace(pos, endptr - keyfile - pos, insert);
}
}
write_file(keyfilename, whole_keyfile);
}
void update_keys_for_ongrip_onwindowborder(FbTk::ResourceManager& rm,
const FbTk::FbString& keyfilename, const FbTk::FbString& appsfilename) {
string whole_keyfile = read_file(keyfilename);
string new_keyfile = "";
// let's put our new keybindings first, so they're easy to find
new_keyfile += "!mouse actions added by fluxbox-update_configs\n";
new_keyfile += "OnTitlebar Move1 :StartMoving\n";
new_keyfile += "OnLeftGrip Move1 :StartResizing bottomleft\n";
new_keyfile += "OnRightGrip Move1 :StartResizing bottomright\n";
new_keyfile += "OnWindowBorder Move1 :StartMoving\n\n";
new_keyfile += whole_keyfile; // don't forget user's old keybindings
new_keyfile += "\n"; // just for good looks
write_file(keyfilename, new_keyfile);
}
void update_keys_for_activetab(FbTk::ResourceManager& rm,
const FbTk::FbString& keyfilename, const FbTk::FbString& appsfilename) {
string whole_file = read_file(keyfilename);
string new_keyfile = "";
new_keyfile += "!mouse actions added by fluxbox-update_configs\n";
new_keyfile += "OnTitlebar Mouse1 :MacroCmd {Focus} {Raise} {ActivateTab}\n";
new_keyfile += whole_file;
new_keyfile += "\n"; // just for good looks
write_file(keyfilename, new_keyfile);
}
// NextWindow {static groups} => NextWindow {static groups} (workspace=[current])
void update_limit_nextwindow_to_current_workspace(FbTk::ResourceManager& rm,
const FbTk::FbString& keyfilename, const FbTk::FbString& appsfilename) {
string whole_file = read_file(keyfilename);
string new_keyfile = "";
new_keyfile += "! fluxbox-update_configs added '(workspace=[current])' to (Next|Prev)(Window|Group)\n";
new_keyfile += "! check lines marked by 'FBCV13' if they are correctly updated\n";
const char* pos = whole_file.c_str();
string last_word;
enum { SCAN, COMMENT, CMD, OPEN_STATIC_GROUP_OR_PATTERN, CLOSE_STATIC_GROUP };
int state = SCAN;
bool mark_line_change = false;
for ( ; *pos; ++pos) {
new_keyfile += *pos;
char c = tolower(*pos);
switch (state) {
case SCAN:
if (c == '{' || c == ':') // ':NextWindow' or 'MacroCmd {NextWindow'
state = CMD;
break;
case CMD:
if (isspace(c) || c == '}' || c == '#' || c == '!' ) {
if (last_word == "nextwindow" || last_word == "nextgroup" ||
last_word == "prevwindow" || last_word == "prevgroup") {
// ':NewWindow[\n!#]' or 'MacroCmd {NextWindow}'
if (c == '\n' || c == '#' || c == '!' || c == '}') {
new_keyfile.insert(new_keyfile.size() - 1, " (workspace=[current])");
mark_line_change = true;
state = SCAN;
} else {
state = OPEN_STATIC_GROUP_OR_PATTERN;
}
} else {
state = SCAN;
last_word.clear();
}
} else { // possible '(next|prev)(group|window)'
last_word += c;
}
break;
case OPEN_STATIC_GROUP_OR_PATTERN:
if (c == '{') { // NextWindow {static group}
state = CLOSE_STATIC_GROUP;
} else if (c == '(') { // NextWindow (foo=bar)
new_keyfile += "workspace=[current]) (";
mark_line_change = true;
state = SCAN;
} else if (c == '}') { // MacroCmd {NextWindow }
new_keyfile.insert(new_keyfile.size() - 1, " (workspace=[current]) ");
mark_line_change = true;
state = SCAN;
}
break;
case CLOSE_STATIC_GROUP:
if (c == '}') {
new_keyfile += " (workspace=[current]) ";
mark_line_change = true;
state = SCAN;
}
break;
};
if (*pos == '\n') { // a new line or a comment resets the state
if (mark_line_change)
new_keyfile.insert(new_keyfile.size() - 1, " !! FBCV13 !!");
mark_line_change = false;
last_word.clear();
state = SCAN;
} else if (*pos == '#' || *pos == '!') {
last_word.clear();
state = COMMENT;
}
}
new_keyfile += "\n"; // just for good looks
write_file(keyfilename, new_keyfile);
}
/*------------------------------------------------------------------*\
\*------------------------------------------------------------------*/
struct Update {
int version;
void (*update)(FbTk::ResourceManager& rm, const FbTk::FbString&, const FbTk::FbString&);
};
const Update UPDATES[] = {
{ 1, update_add_mouse_evens_to_keys },
{ 2, update_move_groups_entries_to_apps_file },
{ 3, update_move_toolbar_wheeling_to_keys_file },
{ 4, update_move_modkey_to_keys_file },
{ 5, update_window_patterns_for_iconbar },
{ 6, update_move_titlebar_actions_to_keys_file },
{ 7, update_added_starttabbing_command },
{ 8, update_disable_icons_in_tabs_for_backwards_compatibility },
{ 9, update_change_format_of_split_placement_menu },
{ 10, update_update_keys_file_for_nextwindow_syntax_changes },
{ 11, update_keys_for_ongrip_onwindowborder },
{ 12, update_keys_for_activetab },
{ 13, update_limit_nextwindow_to_current_workspace }
};
/*------------------------------------------------------------------*\
\*------------------------------------------------------------------*/
int run_updates(int old_version, FbTk::ResourceManager &rm) {
int new_version = old_version;
FbTk::Resource<string> rc_keyfile(rm, "~/.fluxbox/keys",
"session.keyFile", "Session.KeyFile");
FbTk::Resource<string> rc_appsfile(rm, "~/.fluxbox/apps",
"session.appsFile", "Session.AppsFile");
string appsfilename = FbTk::StringUtil::expandFilename(*rc_appsfile);
string keyfilename = FbTk::StringUtil::expandFilename(*rc_keyfile);
for (size_t i = 0; i < sizeof(UPDATES) / sizeof(Update); ++i) {
if (old_version < UPDATES[i].version) {
UPDATES[i].update(rm, keyfilename, appsfilename);
new_version = UPDATES[i].version;
}
}
return new_version;
}
int main(int argc, char **argv) {
string rc_filename;
set<string> style_filenames;
int i = 1;
bool check = 0;
pid_t fb_pid = 0;
FbTk::NLSInit("fluxbox.cat");
_FB_USES_NLS;
for (; i < argc; i++) {
string arg = argv[i];
if (arg == "-rc") {
// look for alternative rc file to use
if ((++i) >= argc) {
cerr<<_FB_CONSOLETEXT(main, RCRequiresArg,
"error: '-rc' requires an argument", "the -rc option requires a file argument")<<endl;
exit(1);
}
rc_filename = argv[i];
} else if (arg == "-pid") {
if ((++i) >= argc) {
// need translations for this, too
cerr<<"the -pid option requires a numeric argument"<<endl;
} else
fb_pid = atoi(argv[i]);
} else if (arg == "-check") {
check = true;
} else if (arg == "-help" || arg == "-h") {
// no NLS translations yet -- we'll just have to use English for now
cout << " -rc <string>\t\t\tuse alternate resource file.\n"
<< " -pid <int>\t\t\ttell fluxbox to reload configuration.\n"
<< " -check\t\t\tcheck version of this tool and the fluxbox config.\n"
<< " -help\t\t\t\tdisplay this help text and exit.\n\n"
<< endl;
exit(0);
}
}
if (rc_filename.empty())
rc_filename = FbTk::StringUtil::expandFilename("~/.fluxbox/init");
FbTk::ResourceManager resource_manager(rc_filename.c_str(),false);
if (!resource_manager.load(rc_filename.c_str())) {
// couldn't load rc file
cerr<<_FB_CONSOLETEXT(Fluxbox, CantLoadRCFile, "Failed to load database", "Failed trying to read rc file")<<":"<<rc_filename<<endl;
cerr<<_FB_CONSOLETEXT(Fluxbox, CantLoadRCFileTrying, "Retrying with", "Retrying rc file loading with (the following file)")<<": "<<DEFAULT_INITFILE<<endl;
// couldn't load default rc file, either
if (!resource_manager.load(DEFAULT_INITFILE)) {
cerr<<_FB_CONSOLETEXT(Fluxbox, CantLoadRCFile, "Failed to load database", "")<<": "<<DEFAULT_INITFILE<<endl;
exit(1); // this is a fatal error for us
}
}
// run updates here
// I feel like putting this in a separate function for no apparent reason
FbTk::Resource<int> config_version(resource_manager, 0,
"session.configVersion", "Session.ConfigVersion");
if (check) {
cout << rc_filename << ": " << *config_version << endl
<< "fluxbox-update_configs: " << UPDATES[sizeof(UPDATES)/sizeof(Update) - 1].version << endl;
exit(0);
}
int old_version = *config_version;
int new_version = run_updates(old_version, resource_manager);
if (new_version > old_version) {
// configs were updated -- let's save our changes
config_version = new_version;
resource_manager.save(rc_filename.c_str(), rc_filename.c_str());
save_all_files();
#if defined(HAVE_SIGNAL_H) && !defined(_WIN32)
// if we were given a fluxbox pid, send it a reconfigure signal
if (fb_pid > 0)
kill(fb_pid, SIGUSR2);
#endif // defined(HAVE_SIGNAL_H) && !defined(_WIN32)
}
return 0;
}
namespace {
set<string> modified_files;
// we may want to put a size limit on this cache, so it doesn't grow too big
map<string,string> file_cache;
}
// returns the contents of the file given, either from the cache or by reading
// the file from disk
string read_file(const string& filename) {
// check if we already have the file in memory
map<string,string>::iterator it = file_cache.find(filename);
if (it != file_cache.end())
return it->second;
if (!FbTk::FileUtil::isRegularFile(filename.c_str())) {
return "";
}
// nope, we'll have to read the file
ifstream infile(filename.c_str());
string whole_file = "";
if (!infile) // failed to open file
return whole_file;
string linebuffer;
while (!infile.eof()) {
getline(infile, linebuffer);
whole_file += linebuffer + "\n";
}
infile.close();
file_cache[filename] = whole_file;
return whole_file;
}
#ifdef NOT_USED
// remove the file from the cache, writing to disk if it's been changed
void forget_file(const string& filename) {
map<string,string>::iterator cache_it = file_cache.find(filename);
// check if we knew about the file to begin with
if (cache_it == file_cache.end())
return;
// check if we've actually modified it
set<string>::iterator mod_it = modified_files.find(filename);
if (mod_it == modified_files.end()) {
file_cache.erase(cache_it);
return;
}
// flush our changes to disk and remove all traces
ofstream outfile(filename.c_str());
outfile << cache_it->second;
file_cache.erase(cache_it);
modified_files.erase(mod_it);
}
#endif // NOT_USED
// updates the file contents in the cache and marks the file as modified so it
// gets saved later
void write_file(const string& filename, const string &contents) {
modified_files.insert(filename);
file_cache[filename] = contents;
}
// actually save all the files we've modified
void save_all_files() {
set<string>::iterator it = modified_files.begin();
set<string>::iterator it_end = modified_files.end();
for (; it != it_end; ++it) {
ofstream outfile(it->c_str());
outfile << file_cache[it->c_str()];
}
modified_files.clear();
}