imported.
[silc.git] / apps / irssi / src / fe-common / core / themes.c
diff --git a/apps/irssi/src/fe-common/core/themes.c b/apps/irssi/src/fe-common/core/themes.c
new file mode 100644 (file)
index 0000000..de9b6de
--- /dev/null
@@ -0,0 +1,1184 @@
+/*
+ themes.c : irssi
+
+    Copyright (C) 1999-2000 Timo Sirainen
+
+    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 "module.h"
+#include "module-formats.h"
+#include "signals.h"
+#include "commands.h"
+#include "levels.h"
+#include "misc.h"
+#include "special-vars.h"
+#include "lib-config/iconfig.h"
+#include "settings.h"
+
+#include "themes.h"
+#include "printtext.h"
+
+#include "default-theme.h"
+
+GSList *themes;
+THEME_REC *current_theme;
+GHashTable *default_formats;
+
+static int init_finished;
+static char *init_errors;
+
+static int theme_read(THEME_REC *theme, const char *path, const char *data);
+
+THEME_REC *theme_create(const char *path, const char *name)
+{
+       THEME_REC *rec;
+
+       g_return_val_if_fail(path != NULL, NULL);
+       g_return_val_if_fail(name != NULL, NULL);
+
+       rec = g_new0(THEME_REC, 1);
+       rec->path = g_strdup(path);
+       rec->name = g_strdup(name);
+       rec->abstracts = g_hash_table_new((GHashFunc) g_str_hash,
+                                         (GCompareFunc) g_str_equal);
+       rec->modules = g_hash_table_new((GHashFunc) g_istr_hash,
+                                       (GCompareFunc) g_istr_equal);
+       themes = g_slist_append(themes, rec);
+       signal_emit("theme created", 1, rec);
+
+       return rec;
+}
+
+static void theme_abstract_destroy(char *key, char *value)
+{
+       g_free(key);
+        g_free(value);
+}
+
+static void theme_module_destroy(const char *key, MODULE_THEME_REC *rec)
+{
+       int n;
+
+       for (n = 0; n < rec->count; n++) {
+               g_free_not_null(rec->formats[n]);
+               g_free_not_null(rec->expanded_formats[n]);
+       }
+       g_free(rec->formats);
+       g_free(rec->expanded_formats);
+
+       g_free(rec->name);
+       g_free(rec);
+}
+
+void theme_destroy(THEME_REC *rec)
+{
+       themes = g_slist_remove(themes, rec);
+
+       signal_emit("theme destroyed", 1, rec);
+
+       g_hash_table_foreach(rec->abstracts, (GHFunc) theme_abstract_destroy, NULL);
+       g_hash_table_destroy(rec->abstracts);
+       g_hash_table_foreach(rec->modules, (GHFunc) theme_module_destroy, NULL);
+       g_hash_table_destroy(rec->modules);
+
+       g_slist_foreach(rec->replace_values, (GFunc) g_free, NULL);
+       g_slist_free(rec->replace_values);
+
+       g_free(rec->path);
+       g_free(rec->name);
+       g_free(rec);
+}
+
+static char *theme_replace_expand(THEME_REC *theme, int index,
+                                 char default_fg, char default_bg,
+                                 char *last_fg, char *last_bg,
+                                 char chr, int flags)
+{
+       GSList *rec;
+       char *ret, *abstract, data[2];
+
+       rec = g_slist_nth(theme->replace_values, index);
+       g_return_val_if_fail(rec != NULL, NULL);
+
+       data[0] = chr; data[1] = '\0';
+
+       abstract = rec->data;
+       abstract = theme_format_expand_data(theme, (const char **) &abstract,
+                                           default_fg, default_bg,
+                                           last_fg, last_bg, flags);
+       ret = parse_special_string(abstract, NULL, NULL, data, NULL, 0);
+       g_free(abstract);
+       return ret;
+}
+
+static const char *fgcolorformats = "nkrgybmpcwKRGYBMPCW";
+static const char *bgcolorformats = "n01234567";
+
+#define IS_FGCOLOR_FORMAT(c) \
+        ((c) != '\0' && strchr(fgcolorformats, c) != NULL)
+#define IS_BGCOLOR_FORMAT(c) \
+        ((c) != '\0' && strchr(bgcolorformats, c) != NULL)
+
+/* append "variable" part in $variable, ie. not the contents of the variable */
+static void theme_format_append_variable(GString *str, const char **format)
+{
+       const char *orig;
+       char *value, *args[1] = { NULL };
+       int free_ret;
+
+       orig = *format;
+       (*format)++;
+
+       value = parse_special((char **) format, NULL, NULL,
+                             args, &free_ret, NULL, 0);
+       if (free_ret) g_free(value);
+       (*format)++;
+
+       /* append the variable name */
+       value = g_strndup(orig, (int) (*format-orig));
+       g_string_append(str, value);
+       g_free(value);
+}
+
+/* append next "item", either a character, $variable or %format */
+static void theme_format_append_next(THEME_REC *theme, GString *str,
+                                    const char **format,
+                                    char default_fg, char default_bg,
+                                    char *last_fg, char *last_bg,
+                                    int flags)
+{
+       int index;
+       unsigned char chr;
+
+       chr = **format;
+       if ((chr == '$' || chr == '%') &&
+           (*format)[1] == '\0') {
+               /* last char, always append */
+               g_string_append_c(str, chr);
+               (*format)++;
+                return;
+       }
+
+       if (chr == '$') {
+               /* $variable .. we'll always need to skip this, since it
+                  may contain characters that are in replace chars. */
+               theme_format_append_variable(str, format);
+               return;
+       }
+
+       if (**format == '%') {
+               /* format */
+               (*format)++;
+               if (**format != '{' && **format != '}') {
+                        chr = **format;
+                       if (**format == 'n') {
+                               /* %n = change to default color */
+                               g_string_append(str, "%n");
+
+                               if (default_bg != 'n') {
+                                       g_string_append_c(str, '%');
+                                       g_string_append_c(str, default_bg);
+                               }
+                               if (default_fg != 'n') {
+                                       g_string_append_c(str, '%');
+                                       g_string_append_c(str, default_fg);
+                               }
+
+                               *last_fg = default_fg;
+                               *last_bg = default_bg;
+                       } else {
+                               if (IS_FGCOLOR_FORMAT(chr))
+                                       *last_fg = chr;
+                               if (IS_BGCOLOR_FORMAT(chr))
+                                       *last_bg = chr;
+                               g_string_append_c(str, '%');
+                               g_string_append_c(str, chr);
+                       }
+                       (*format)++;
+                       return;
+               }
+
+               /* %{ or %} gives us { or } char */
+               chr = **format;
+       }
+
+       index = (flags & EXPAND_FLAG_IGNORE_REPLACES) ? -1 :
+               theme->replace_keys[(int) chr];
+       if (index == -1)
+               g_string_append_c(str, chr);
+       else {
+               char *value;
+
+               value = theme_replace_expand(theme, index,
+                                            default_fg, default_bg,
+                                            last_fg, last_bg, chr, flags);
+               g_string_append(str, value);
+               g_free(value);
+       }
+
+        (*format)++;
+}
+
+/* expand a single {abstract ...data... } */
+static char *theme_format_expand_abstract(THEME_REC *theme,
+                                         const char **formatp,
+                                         char default_fg, char default_bg,
+                                         int flags)
+{
+       const char *p, *format;
+       char *abstract, *data, *ret;
+       int len;
+
+       format = *formatp;
+
+       /* get abstract name first */
+       p = format;
+       while (*p != '\0' && *p != ' ' &&
+              *p != '{' && *p != '}') p++;
+       if (*p == '\0' || p == format)
+               return NULL; /* error */
+
+       len = (int) (p-format);
+       abstract = g_strndup(format, len);
+
+       /* skip the following space, if there's any more spaces they're
+          treated as arguments */
+       if (*p == ' ') {
+               len++;
+               if ((flags & EXPAND_FLAG_IGNORE_EMPTY)) {
+                        /* if the data is empty, ignore the abstract */
+                       p = format+len;
+                       while (*p == ' ') p++;
+                       if (*p == '}') {
+                                *formatp = p+1;
+                               g_free(abstract);
+                               return NULL;
+                       }
+               }
+
+       }
+       *formatp = format+len;
+
+       /* get the abstract data */
+       data = g_hash_table_lookup(theme->abstracts, abstract);
+       g_free(abstract);
+       if (data == NULL) {
+               /* unknown abstract, just display the data */
+               data = "$0-";
+       }
+       abstract = g_strdup(data);
+
+       /* we'll need to get the data part. it may contain
+          more abstracts, they are automatically expanded. */
+       data = theme_format_expand_data(theme, formatp, default_fg, default_bg,
+                                       NULL, NULL, flags);
+       len = strlen(data);
+
+       if (len > 1 && isdigit(data[len-1]) && data[len-2] == '$') {
+               /* ends with $<digit> .. this breaks things if next
+                  character is digit or '-' */
+                char digit, *tmp;
+
+               tmp = data;
+               digit = tmp[len-1];
+               tmp[len-1] = '\0';
+
+               data = g_strdup_printf("%s{%c}", tmp, digit);
+               g_free(tmp);
+       }
+
+       ret = parse_special_string(abstract, NULL, NULL, data, NULL, 0);
+       g_free(abstract);
+        g_free(data);
+       abstract = ret;
+
+       /* abstract may itself contain abstracts or replaces */
+       p = abstract;
+       ret = theme_format_expand_data(theme, &p, default_fg, default_bg,
+                                      &default_fg, &default_bg,
+                                      flags | EXPAND_FLAG_LASTCOLOR_ARG);
+       g_free(abstract);
+       return ret;
+}
+
+/* expand the data part in {abstract data} */
+char *theme_format_expand_data(THEME_REC *theme, const char **format,
+                              char default_fg, char default_bg,
+                              char *save_last_fg, char *save_last_bg,
+                              int flags)
+{
+       GString *str;
+       char *ret, *abstract;
+       char last_fg, last_bg;
+        int recurse_flags;
+
+       last_fg = default_fg;
+       last_bg = default_bg;
+        recurse_flags = flags & EXPAND_FLAG_RECURSIVE_MASK;
+
+       str = g_string_new(NULL);
+       while (**format != '\0') {
+               if ((flags & EXPAND_FLAG_ROOT) == 0 && **format == '}') {
+                       /* ignore } if we're expanding original string */
+                       (*format)++;
+                       break;
+               }
+
+               if (**format != '{') {
+                       if ((flags & EXPAND_FLAG_LASTCOLOR_ARG) &&
+                           **format == '$' && (*format)[1] == '0') {
+                               /* save the color before $0 ..
+                                  this is for the %n replacing */
+                               if (save_last_fg != NULL) {
+                                       *save_last_fg = last_fg;
+                                       save_last_fg = NULL;
+                               }
+                               if (save_last_bg != NULL) {
+                                       *save_last_bg = last_bg;
+                                       save_last_bg = NULL;
+                               }
+                       }
+
+                       theme_format_append_next(theme, str, format,
+                                                default_fg, default_bg,
+                                                &last_fg, &last_bg,
+                                                recurse_flags);
+                       continue;
+               }
+
+               (*format)++;
+               if (**format == '\0' || **format == '}')
+                       break; /* error */
+
+               /* get a single {...} */
+               abstract = theme_format_expand_abstract(theme, format,
+                                                       last_fg, last_bg,
+                                                       recurse_flags);
+               if (abstract != NULL) {
+                       g_string_append(str, abstract);
+                       g_free(abstract);
+               }
+       }
+
+       if ((flags & EXPAND_FLAG_LASTCOLOR_ARG) == 0) {
+               /* save the last color */
+               if (save_last_fg != NULL)
+                       *save_last_fg = last_fg;
+               if (save_last_bg != NULL)
+                       *save_last_bg = last_bg;
+       }
+
+       ret = str->str;
+        g_string_free(str, FALSE);
+        return ret;
+}
+
+#define IS_OLD_FORMAT(code, last_fg, last_bg) \
+       (((code) == 'n' && (last_fg) == 'n' && (last_bg) == 'n') || \
+       ((code) != 'n' && ((code) == (last_fg) || (code) == (last_bg))))
+
+static char *theme_format_compress_colors(THEME_REC *theme, const char *format)
+{
+       GString *str;
+       char *ret, last_fg, last_bg;
+
+       str = g_string_new(NULL);
+
+       last_fg = last_bg = 'n';
+       while (*format != '\0') {
+               if (*format == '$') {
+                        /* $variable, skrip it entirely */
+                       theme_format_append_variable(str, &format);
+                        last_fg = last_bg = '\0';
+               } else if (*format != '%') {
+                       /* a normal character */
+                       g_string_append_c(str, *format);
+                       format++;
+               } else {
+                       /* %format */
+                       format++;
+                       if (IS_OLD_FORMAT(*format, last_fg, last_bg)) {
+                               /* active color set again */
+                       } else if (IS_FGCOLOR_FORMAT(*format) &&
+                                  (*format != 'n' || format[2] == 'n') &&
+                                  format[1] == '%' &&
+                                  IS_FGCOLOR_FORMAT(format[2])) {
+                               /* two fg colors in a row. bg colors are
+                                  so rare that we don't bother checking
+                                  them */
+                       } else {
+                               /* some format, add it */
+                               g_string_append_c(str, '%');
+                               g_string_append_c(str, *format);
+
+                               if (IS_FGCOLOR_FORMAT(*format))
+                                       last_fg = *format;
+                               if (IS_BGCOLOR_FORMAT(*format))
+                                       last_bg = *format;
+                       }
+                       format++;
+               }
+       }
+
+       ret = str->str;
+        g_string_free(str, FALSE);
+        return ret;
+}
+
+char *theme_format_expand(THEME_REC *theme, const char *format)
+{
+       char *data, *ret;
+
+       g_return_val_if_fail(theme != NULL, NULL);
+       g_return_val_if_fail(format != NULL, NULL);
+
+       data = theme_format_expand_data(theme, &format, 'n', 'n', NULL, NULL,
+                                       EXPAND_FLAG_ROOT);
+       ret = theme_format_compress_colors(theme, data);
+        g_free(data);
+       return ret;
+}
+
+static MODULE_THEME_REC *theme_module_create(THEME_REC *theme, const char *module)
+{
+       MODULE_THEME_REC *rec;
+       FORMAT_REC *formats;
+
+       rec = g_hash_table_lookup(theme->modules, module);
+       if (rec != NULL) return rec;
+
+       formats = g_hash_table_lookup(default_formats, module);
+        g_return_val_if_fail(formats != NULL, NULL);
+
+       rec = g_new0(MODULE_THEME_REC, 1);
+       rec->name = g_strdup(module);
+
+       for (rec->count = 0; formats[rec->count].def != NULL; rec->count++) ;
+       rec->formats = g_new0(char *, rec->count);
+       rec->expanded_formats = g_new0(char *, rec->count);
+
+       g_hash_table_insert(theme->modules, rec->name, rec);
+       return rec;
+}
+
+static void theme_read_replaces(CONFIG_REC *config, THEME_REC *theme)
+{
+       GSList *tmp;
+       CONFIG_NODE *node;
+       const char *p;
+        int index;
+
+        /* reset replace keys */
+       for (index = 0; index < 256; index++)
+                theme->replace_keys[index] = -1;
+       index = 0;
+
+       node = config_node_traverse(config, "replaces", FALSE);
+       if (node == NULL || node->type !=  NODE_TYPE_BLOCK) return;
+
+       for (tmp = node->value; tmp != NULL; tmp = tmp->next) {
+               node = tmp->data;
+
+               if (node->key != NULL && node->value != NULL) {
+                       for (p = node->key; *p != '\0'; p++)
+                                theme->replace_keys[(int) *p] = index;
+
+                       theme->replace_values =
+                               g_slist_append(theme->replace_values,
+                                              g_strdup(node->value));
+                        index++;
+               }
+       }
+}
+
+static void theme_read_abstracts(CONFIG_REC *config, THEME_REC *theme)
+{
+       GSList *tmp;
+       CONFIG_NODE *node;
+        gpointer oldkey, oldvalue;
+
+       node = config_node_traverse(config, "abstracts", FALSE);
+       if (node == NULL || node->type !=  NODE_TYPE_BLOCK) return;
+
+       for (tmp = node->value; tmp != NULL; tmp = tmp->next) {
+               node = tmp->data;
+
+               if (node->key == NULL || node->value == NULL)
+                       continue;
+
+               if (g_hash_table_lookup_extended(theme->abstracts, node->key,
+                                                &oldkey, &oldvalue)) {
+                        /* new values override old ones */
+                        g_hash_table_remove(theme->abstracts, oldkey);
+                       g_free(oldkey);
+                       g_free(oldvalue);
+               }
+
+               g_hash_table_insert(theme->abstracts, g_strdup(node->key),
+                                   g_strdup(node->value));
+       }
+}
+
+static void theme_set_format(THEME_REC *theme, MODULE_THEME_REC *rec,
+                            const char *module,
+                            const char *key, const char *value)
+{
+       int num;
+
+        num = format_find_tag(module, key);
+       if (num != -1) {
+               rec->formats[num] = g_strdup(value);
+               rec->expanded_formats[num] = theme_format_expand(theme, value);
+       }
+}
+
+static void theme_read_formats(THEME_REC *theme, const char *module,
+                              CONFIG_REC *config, MODULE_THEME_REC *rec)
+{
+       CONFIG_NODE *node;
+       GSList *tmp;
+
+       node = config_node_traverse(config, "formats", FALSE);
+       if (node == NULL) return;
+       node = config_node_section(node, module, -1);
+       if (node == NULL) return;
+
+       for (tmp = node->value; tmp != NULL; tmp = tmp->next) {
+               node = tmp->data;
+
+               if (node->key != NULL && node->value != NULL) {
+                       theme_set_format(theme, rec, module,
+                                        node->key, node->value);
+               }
+       }
+}
+
+static void theme_init_module(THEME_REC *theme, const char *module,
+                             CONFIG_REC *config)
+{
+       MODULE_THEME_REC *rec;
+       FORMAT_REC *formats;
+       int n;
+
+       formats = g_hash_table_lookup(default_formats, module);
+       g_return_if_fail(formats != NULL);
+
+       rec = theme_module_create(theme, module);
+
+       if (config != NULL)
+               theme_read_formats(theme, module, config, rec);
+
+       /* expand the remaining formats */
+       for (n = 0; n < rec->count; n++) {
+               if (rec->expanded_formats[n] == NULL) {
+                       rec->expanded_formats[n] =
+                               theme_format_expand(theme, formats[n].def);
+               }
+       }
+}
+
+static void sig_print_errors(void)
+{
+       init_finished = TRUE;
+
+       if (init_errors != NULL) {
+               signal_emit("gui dialog", 2, "error", init_errors);
+                g_free(init_errors);
+       }
+}
+
+static void theme_read_module(THEME_REC *theme, const char *module)
+{
+       CONFIG_REC *config;
+
+       config = config_open(theme->path, -1);
+       if (config != NULL)
+               config_parse(config);
+
+       theme_init_module(theme, module, config);
+
+       if (config != NULL) config_close(config);
+}
+
+static void themes_read_module(const char *module)
+{
+        g_slist_foreach(themes, (GFunc) theme_read_module, (void *) module);
+}
+
+static void theme_remove_module(THEME_REC *theme, const char *module)
+{
+       MODULE_THEME_REC *rec;
+
+       rec = g_hash_table_lookup(theme->modules, module);
+       if (rec == NULL) return;
+
+       g_hash_table_remove(theme->modules, module);
+       theme_module_destroy(module, rec);
+}
+
+static void themes_remove_module(const char *module)
+{
+        g_slist_foreach(themes, (GFunc) theme_remove_module, (void *) module);
+}
+
+void theme_register_module(const char *module, FORMAT_REC *formats)
+{
+       if (g_hash_table_lookup(default_formats, module) != NULL)
+               return;
+
+        g_hash_table_insert(default_formats, g_strdup(module), formats);
+       themes_read_module(module);
+}
+
+void theme_unregister_module(const char *module)
+{
+       gpointer key, value;
+
+       if (default_formats == NULL)
+               return; /* already uninitialized */
+
+       if (!g_hash_table_lookup_extended(default_formats, module, &key, &value))
+               return;
+
+       g_hash_table_remove(default_formats, key);
+       g_free(key);
+
+       themes_remove_module(module);
+}
+
+static THEME_REC *theme_find(const char *name)
+{
+       GSList *tmp;
+
+       for (tmp = themes; tmp != NULL; tmp = tmp->next) {
+               THEME_REC *rec = tmp->data;
+
+               if (g_strcasecmp(rec->name, name) == 0)
+                       return rec;
+       }
+
+       return NULL;
+}
+
+static void window_themes_update(void)
+{
+       GSList *tmp;
+
+       for (tmp = windows; tmp != NULL; tmp = tmp->next) {
+               WINDOW_REC *rec = tmp->data;
+
+               if (rec->theme_name != NULL)
+                        rec->theme = theme_load(rec->theme_name);
+       }
+}
+
+THEME_REC *theme_load(const char *setname)
+{
+       THEME_REC *theme, *oldtheme;
+       struct stat statbuf;
+       char *fname, *name, *p;
+
+        name = g_strdup(setname);
+       p = strrchr(name, '.');
+       if (p != NULL && strcmp(p, ".theme") == 0) {
+               /* remove the trailing .theme */
+                *p = '\0';
+       }
+
+       theme = theme_find(name);
+
+       /* check home dir */
+       fname = g_strdup_printf("%s/.irssi/%s.theme", g_get_home_dir(), name);
+       if (stat(fname, &statbuf) != 0) {
+               /* check global config dir */
+               g_free(fname);
+               fname = g_strdup_printf(SYSCONFDIR"/irssi/%s.theme", name);
+               if (stat(fname, &statbuf) != 0) {
+                       /* theme not found */
+                       g_free(fname);
+                       g_free(name);
+                       return theme; /* use the one in memory if possible */
+               }
+       }
+
+       if (theme != NULL && theme->last_modify == statbuf.st_mtime) {
+               /* theme not modified, use the one already in memory */
+               g_free(fname);
+               g_free(name);
+               return theme;
+       }
+
+        oldtheme = theme;
+       theme = theme_create(fname, name);
+       theme->last_modify = statbuf.st_mtime;
+       if (!theme_read(theme, theme->path, NULL)) {
+                /* error reading .theme file */
+               theme_destroy(theme);
+               theme = NULL;
+       }
+
+       if (oldtheme != NULL && theme != NULL) {
+               theme_destroy(oldtheme);
+               window_themes_update();
+       }
+
+       g_free(fname);
+       g_free(name);
+       return theme;
+}
+
+typedef struct {
+        THEME_REC *theme;
+       CONFIG_REC *config;
+} THEME_READ_REC;
+
+static void theme_read_modules(const char *module, void *value,
+                              THEME_READ_REC *rec)
+{
+       theme_init_module(rec->theme, module, rec->config);
+}
+
+static void read_error(const char *str)
+{
+       char *old;
+
+       if (init_finished)
+                printtext(NULL, NULL, MSGLEVEL_CLIENTERROR, "%s", str);
+       else if (init_errors == NULL)
+               init_errors = g_strdup(str);
+       else {
+                old = init_errors;
+               init_errors = g_strconcat(init_errors, "\n", str, NULL);
+                g_free(old);
+       }
+}
+
+static int theme_read(THEME_REC *theme, const char *path, const char *data)
+{
+       CONFIG_REC *config;
+       THEME_READ_REC rec;
+        char *str;
+
+       config = config_open(data == NULL ? path : NULL, -1) ;
+       if (config == NULL) {
+               /* didn't exist or no access? */
+               str = g_strdup_printf("Error reading theme file %s: %s",
+                                     path, g_strerror(errno));
+               read_error(str);
+               g_free(str);
+               return FALSE;
+       }
+
+       if (data != NULL)
+               config_parse_data(config, data, "internal");
+        else
+               config_parse(config);
+
+       if (config_last_error(config) != NULL) {
+               str = g_strdup_printf("Ignored errors in theme %s:\n%s",
+                                     theme->name, config_last_error(config));
+               read_error(str);
+                g_free(str);
+       }
+
+       theme->default_color =
+               config_get_int(config, NULL, "default_color", 0);
+       theme->default_real_color =
+               config_get_int(config, NULL, "default_real_color", 7);
+       theme_read_replaces(config, theme);
+
+       if (data == NULL) {
+               /* get the default abstracts from default theme. */
+               CONFIG_REC *default_config;
+
+               default_config = config_open(NULL, -1);
+               config_parse_data(default_config, default_theme, "internal");
+               theme_read_abstracts(default_config, theme);
+               config_close(default_config);
+       }
+       theme_read_abstracts(config, theme);
+
+       rec.theme = theme;
+       rec.config = config;
+       g_hash_table_foreach(default_formats,
+                            (GHFunc) theme_read_modules, &rec);
+       config_close(config);
+
+        return TRUE;
+}
+
+typedef struct {
+       char *name;
+       char *short_name;
+} THEME_SEARCH_REC;
+
+static int theme_search_equal(THEME_SEARCH_REC *r1, THEME_SEARCH_REC *r2)
+{
+       return g_strcasecmp(r1->short_name, r2->short_name);
+}
+
+static void theme_get_modules(char *module, FORMAT_REC *formats, GSList **list)
+{
+       THEME_SEARCH_REC *rec;
+
+       rec = g_new(THEME_SEARCH_REC, 1);
+       rec->name = module;
+       rec->short_name = strrchr(module, '/');
+       if (rec->short_name != NULL)
+               rec->short_name++; else rec->short_name = module;
+       *list = g_slist_insert_sorted(*list, rec, (GCompareFunc) theme_search_equal);
+}
+
+static GSList *get_sorted_modules(void)
+{
+       GSList *list;
+
+       list = NULL;
+       g_hash_table_foreach(default_formats, (GHFunc) theme_get_modules, &list);
+       return list;
+}
+
+static THEME_SEARCH_REC *theme_search(GSList *list, const char *module)
+{
+       THEME_SEARCH_REC *rec;
+
+       while (list != NULL) {
+               rec = list->data;
+
+               if (g_strcasecmp(rec->short_name, module) == 0)
+                       return rec;
+               list = list->next;
+       }
+
+       return NULL;
+}
+
+static void theme_show(THEME_SEARCH_REC *rec, const char *key, const char *value, int reset)
+{
+       MODULE_THEME_REC *theme;
+       FORMAT_REC *formats;
+       const char *text, *last_title;
+       int n, first;
+
+       formats = g_hash_table_lookup(default_formats, rec->name);
+       theme = g_hash_table_lookup(current_theme->modules, rec->name);
+
+       last_title = NULL; first = TRUE;
+       for (n = 1; formats[n].def != NULL; n++) {
+               text = theme != NULL && theme->formats[n] != NULL ?
+                       theme->formats[n] : formats[n].def;
+
+               if (formats[n].tag == NULL)
+                       last_title = text;
+               else if ((value != NULL && key != NULL && g_strcasecmp(formats[n].tag, key) == 0) ||
+                        (value == NULL && (key == NULL || stristr(formats[n].tag, key) != NULL))) {
+                       if (first) {
+                               printformat(NULL, NULL, MSGLEVEL_CLIENTCRAP, TXT_FORMAT_TITLE, rec->short_name, formats[0].def);
+                               first = FALSE;
+                       }
+                       if (last_title != NULL)
+                               printformat(NULL, NULL, MSGLEVEL_CLIENTCRAP, TXT_FORMAT_SUBTITLE, last_title);
+                       if (reset || value != NULL) {
+                               theme = theme_module_create(current_theme, rec->name);
+                                g_free_not_null(theme->formats[n]);
+                                g_free_not_null(theme->expanded_formats[n]);
+
+                               text = reset ? formats[n].def : value;
+                               theme->formats[n] = reset ? NULL : g_strdup(value);
+                               theme->expanded_formats[n] = theme_format_expand(current_theme, text);
+                       }
+                       printformat(NULL, NULL, MSGLEVEL_CLIENTCRAP, TXT_FORMAT_ITEM, formats[n].tag, text);
+                       last_title = NULL;
+               }
+       }
+}
+
+/* SYNTAX: FORMAT [-delete | -reset] [<module>] [<key> [<value>]] */
+static void cmd_format(const char *data)
+{
+        GHashTable *optlist;
+       GSList *tmp, *modules;
+       char *module, *key, *value;
+       void *free_arg;
+       int reset;
+
+       if (!cmd_get_params(data, &free_arg, 3 | PARAM_FLAG_GETREST | PARAM_FLAG_OPTIONS,
+                           "format", &optlist, &module, &key, &value))
+               return;
+
+       modules = get_sorted_modules();
+       if (*module == '\0')
+               module = NULL;
+       else if (theme_search(modules, module) == NULL) {
+               /* first argument isn't module.. */
+               cmd_params_free(free_arg);
+               if (!cmd_get_params(data, &free_arg, 2 | PARAM_FLAG_GETREST | PARAM_FLAG_OPTIONS,
+                                   "format", &optlist, &key, &value))
+                       return;
+               module = NULL;
+       }
+
+       reset = FALSE;
+       if (*key == '\0') key = NULL;
+       if (g_hash_table_lookup(optlist, "reset"))
+               reset = TRUE;
+       else if (g_hash_table_lookup(optlist, "delete"))
+               value = "";
+       else if (*value == '\0')
+               value = NULL;
+
+       for (tmp = modules; tmp != NULL; tmp = tmp->next) {
+               THEME_SEARCH_REC *rec = tmp->data;
+
+               if (module == NULL || g_strcasecmp(rec->short_name, module) == 0)
+                       theme_show(rec, key, value, reset);
+       }
+       g_slist_foreach(modules, (GFunc) g_free, NULL);
+       g_slist_free(modules);
+
+        cmd_params_free(free_arg);
+}
+
+static void module_save(const char *module, MODULE_THEME_REC *rec,
+                        CONFIG_REC *config)
+{
+       CONFIG_NODE *fnode, *node;
+       FORMAT_REC *formats;
+       int n;
+
+        formats = g_hash_table_lookup(default_formats, rec->name);
+       if (formats == NULL) return;
+
+       fnode = config_node_traverse(config, "formats", TRUE);
+
+       node = config_node_section(fnode, rec->name, NODE_TYPE_BLOCK);
+       for (n = 0; formats[n].def != NULL; n++) {
+                if (rec->formats[n] != NULL) {
+                        config_node_set_str(config, node, formats[n].tag,
+                                            rec->formats[n]);
+                }
+        }
+
+        if (node->value == NULL) {
+                /* not modified, don't keep the empty section */
+                config_node_remove(config, fnode, node);
+                if (fnode->value == NULL)
+                        config_node_remove(config, config->mainnode, fnode);
+        }
+}
+
+static void theme_save(THEME_REC *theme)
+{
+       CONFIG_REC *config;
+       char *path;
+       int ok;
+
+       config = config_open(theme->path, -1);
+        if (config != NULL)
+                config_parse(config);
+        else {
+                if (g_strcasecmp(theme->name, "default") == 0) {
+                        config = config_open(NULL, -1);
+                        config_parse_data(config, default_theme, "internal");
+                        config_change_file_name(config, theme->path, 0660);
+                } else {
+                        config = config_open(theme->path, 0660);
+                        if (config == NULL)
+                                return;
+                        config_parse(config);
+                }
+        }
+
+       g_hash_table_foreach(theme->modules, (GHFunc) module_save, config);
+
+        /* always save the theme to ~/.irssi/ */
+       path = g_strdup_printf("%s/.irssi/%s", g_get_home_dir(),
+                              g_basename(theme->path));
+       ok = config_write(config, path, 0660) == 0;
+
+       printformat(NULL, NULL, MSGLEVEL_CLIENTNOTICE,
+                   ok ? TXT_THEME_SAVED : TXT_THEME_SAVE_FAILED,
+                   path, config_last_error(config));
+
+       g_free(path);
+       config_close(config);
+}
+
+/* save changed formats */
+static void cmd_save(void)
+{
+       GSList *tmp;
+
+       for (tmp = themes; tmp != NULL; tmp = tmp->next) {
+               THEME_REC *theme = tmp->data;
+
+               theme_save(theme);
+       }
+}
+
+static void complete_format_list(THEME_SEARCH_REC *rec, const char *key, GList **list)
+{
+       FORMAT_REC *formats;
+       int n, len;
+
+       formats = g_hash_table_lookup(default_formats, rec->name);
+
+       len = strlen(key);
+       for (n = 1; formats[n].def != NULL; n++) {
+               const char *item = formats[n].tag;
+
+               if (item != NULL && g_strncasecmp(item, key, len) == 0)
+                        *list = g_list_append(*list, g_strdup(item));
+       }
+}
+
+static GList *completion_get_formats(const char *module, const char *key)
+{
+       GSList *modules, *tmp;
+       GList *list;
+
+       g_return_val_if_fail(key != NULL, NULL);
+
+       list = NULL;
+
+       modules = get_sorted_modules();
+       if (*module == '\0' || theme_search(modules, module) != NULL) {
+               for (tmp = modules; tmp != NULL; tmp = tmp->next) {
+                       THEME_SEARCH_REC *rec = tmp->data;
+
+                       if (*module == '\0' || g_strcasecmp(rec->short_name, module) == 0)
+                               complete_format_list(rec, key, &list);
+               }
+       }
+       g_slist_foreach(modules, (GFunc) g_free, NULL);
+       g_slist_free(modules);
+
+       return list;
+}
+
+static void sig_complete_format(GList **list, WINDOW_REC *window,
+                               const char *word, const char *line, int *want_space)
+{
+       const char *ptr;
+       int words;
+
+       g_return_if_fail(list != NULL);
+       g_return_if_fail(word != NULL);
+       g_return_if_fail(line != NULL);
+
+        ptr = line;
+
+       words = 0;
+       do {
+               words++;
+                ptr = strchr(ptr, ' ');
+       } while (ptr != NULL);
+
+       if (words > 2)
+               return;
+
+       *list = completion_get_formats(line, word);
+       if (*list != NULL) signal_stop();
+}
+
+static void change_theme(const char *name, int verbose)
+{
+       THEME_REC *rec;
+
+       rec = theme_load(name);
+       if (rec != NULL) {
+               current_theme = rec;
+               if (verbose) {
+                       printformat_window(active_win, MSGLEVEL_CLIENTNOTICE,
+                                          TXT_THEME_CHANGED,
+                                          rec->name, rec->path);
+               }
+       } else if (verbose) {
+               printformat(NULL, NULL, MSGLEVEL_CLIENTERROR,
+                           TXT_THEME_NOT_FOUND, name);
+       }
+}
+
+static void read_settings(void)
+{
+       const char *theme;
+
+       theme = settings_get_str("theme");
+       if (strcmp(current_theme->name, theme) != 0)
+               change_theme(theme, TRUE);
+}
+
+static void themes_read(void)
+{
+       char *fname;
+
+       while (themes != NULL)
+               theme_destroy(themes->data);
+
+       /* first there's default theme.. */
+       current_theme = theme_load("default");
+       if (current_theme == NULL) {
+               fname = g_strdup_printf("%s/.irssi/default.theme",
+                                       g_get_home_dir());
+               current_theme = theme_create(fname, "default");
+               current_theme->default_color = 0;
+               current_theme->default_real_color = 7;
+                theme_read(current_theme, NULL, default_theme);
+               g_free(fname);
+       }
+
+        window_themes_update();
+        change_theme(settings_get_str("theme"), FALSE);
+}
+
+void themes_init(void)
+{
+       settings_add_str("lookandfeel", "theme", "default");
+
+       default_formats = g_hash_table_new((GHashFunc) g_str_hash,
+                                          (GCompareFunc) g_str_equal);
+
+        init_finished = FALSE;
+        init_errors = NULL;
+
+       themes = NULL;
+       themes_read();
+
+       command_bind("format", NULL, (SIGNAL_FUNC) cmd_format);
+       command_bind("save", NULL, (SIGNAL_FUNC) cmd_save);
+       signal_add("complete command format", (SIGNAL_FUNC) sig_complete_format);
+       signal_add("irssi init finished", (SIGNAL_FUNC) sig_print_errors);
+        signal_add("setup changed", (SIGNAL_FUNC) read_settings);
+       signal_add("setup reread", (SIGNAL_FUNC) themes_read);
+
+       command_set_options("format", "delete reset");
+}
+
+void themes_deinit(void)
+{
+       while (themes != NULL)
+               theme_destroy(themes->data);
+
+       g_hash_table_destroy(default_formats);
+       default_formats = NULL;
+
+       command_unbind("format", (SIGNAL_FUNC) cmd_format);
+       command_unbind("save", (SIGNAL_FUNC) cmd_save);
+       signal_remove("complete command format", (SIGNAL_FUNC) sig_complete_format);
+       signal_remove("irssi init finished", (SIGNAL_FUNC) sig_print_errors);
+        signal_remove("setup changed", (SIGNAL_FUNC) read_settings);
+        signal_remove("setup reread", (SIGNAL_FUNC) themes_read);
+}