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Diffstat (limited to 'lib/gtk-experiment-widgets/gtk-experiment-transcript-formats.c')
-rw-r--r--lib/gtk-experiment-widgets/gtk-experiment-transcript-formats.c417
1 files changed, 0 insertions, 417 deletions
diff --git a/lib/gtk-experiment-widgets/gtk-experiment-transcript-formats.c b/lib/gtk-experiment-widgets/gtk-experiment-transcript-formats.c
deleted file mode 100644
index d81d6b9..0000000
--- a/lib/gtk-experiment-widgets/gtk-experiment-transcript-formats.c
+++ /dev/null
@@ -1,417 +0,0 @@
-/**
- * @file
- * "Format" expression-related functions of the \e GtkExperimentTranscript
- * widget
- */
-
-/*
- * Copyright (C) 2012-2013 Otto-von-Guericke-Universität Magdeburg
- *
- * 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 3 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, see <http://www.gnu.org/licenses/>.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <stdio.h>
-#include <string.h>
-#include <assert.h>
-#include <errno.h>
-
-#include <glib.h>
-#include <glib/gprintf.h>
-#include <glib/gstdio.h>
-
-#include <gtk/gtk.h>
-
-#include "gtk-experiment-transcript.h"
-#include "gtk-experiment-transcript-private.h"
-
-static inline gint attr_list_get_length(PangoAttrList *list);
-static gboolean gtk_experiment_transcript_parse_format(GtkExperimentTranscriptFormat *fmt,
- const gchar *str,
- GError **error);
-
-#define FORMAT_REGEX_COMPILE_FLAGS (G_REGEX_CASELESS)
-#define FORMAT_REGEX_MATCH_FLAGS (0)
-
-static inline gint
-attr_list_get_length(PangoAttrList *list)
-{
- PangoAttrIterator *iter = pango_attr_list_get_iterator(list);
- gint length = 0;
-
- do
- length++;
- while (pango_attr_iterator_next(iter));
- pango_attr_iterator_destroy(iter);
-
- return length;
-}
-
-static gboolean
-gtk_experiment_transcript_parse_format(GtkExperimentTranscriptFormat *fmt,
- const gchar *str,
- GError **error)
-{
- PangoAttrIterator *iter;
-
- gchar *pattern, *pattern_captures, *p;
- gint capture_count = 0;
-
- g_return_val_if_fail(error == NULL || *error == NULL, FALSE);
-
- if (!pango_parse_markup(str, -1, 0, &fmt->attribs, &pattern,
- NULL, error))
- return FALSE;
-
- p = pattern_captures = g_malloc(strlen(pattern) + 1 +
- 2*attr_list_get_length(fmt->attribs));
- iter = pango_attr_list_get_iterator(fmt->attribs);
- do {
- gint start, end;
-
- pango_attr_iterator_range(iter, &start, &end);
- if (end == G_MAXINT)
- end = strlen(pattern);
-
- if (end - start > 0) {
- *p++ = '(';
- strncpy(p, pattern + start, end - start);
- p += end - start;
- *p++ = ')';
-
- capture_count++;
- }
- } while (pango_attr_iterator_next(iter));
- pango_attr_iterator_destroy(iter);
- *p = '\0';
- g_free(pattern);
-
- fmt->regexp = g_regex_new(pattern_captures,
- FORMAT_REGEX_COMPILE_FLAGS, 0, error);
- g_free(pattern_captures);
- if (fmt->regexp == NULL) {
- gtk_experiment_transcript_free_format(fmt);
- fmt->attribs = NULL;
-
- return FALSE;
- }
-
- if (g_regex_get_capture_count(fmt->regexp) != capture_count) {
- g_set_error(error,
- GTK_EXPERIMENT_TRANSCRIPT_ERROR,
- GTK_EXPERIMENT_TRANSCRIPT_ERROR_REGEXCAPTURES,
- "Additional regular expression captures not allowed");
-
- gtk_experiment_transcript_free_format(fmt);
- fmt->regexp = NULL;
- fmt->attribs = NULL;
-
- return FALSE;
- }
-
- return TRUE;
-}
-
-/** @private */
-G_GNUC_INTERNAL void
-gtk_experiment_transcript_apply_format(GtkExperimentTranscriptFormat *fmt,
- const gchar *text,
- PangoAttrList *attrib_list)
-{
- GMatchInfo *match_info;
-
- if (fmt->regexp == NULL || fmt->attribs == NULL)
- return;
-
- g_regex_match(fmt->regexp, text, FORMAT_REGEX_MATCH_FLAGS, &match_info);
-
- while (g_match_info_matches(match_info)) {
- PangoAttrIterator *iter;
- gint match_num = 0;
-
- iter = pango_attr_list_get_iterator(fmt->attribs);
- do {
- gint start, end;
- GSList *attribs;
-
- pango_attr_iterator_range(iter, &start, &end);
- if (end == G_MAXINT)
- end = strlen(g_regex_get_pattern(fmt->regexp));
-
- if (end - start == 0)
- continue;
-
- start = end = -1;
- g_match_info_fetch_pos(match_info, ++match_num,
- &start, &end);
- if (start < 0 || end < 0)
- continue;
-
- attribs = pango_attr_iterator_get_attrs(iter);
- for (GSList *cur = attribs; cur != NULL; cur = cur->next) {
- PangoAttribute *attrib;
-
- attrib = pango_attribute_copy((PangoAttribute *)cur->data);
- attrib->start_index = (guint)start;
- attrib->end_index = (guint)end;
- pango_attr_list_change(attrib_list, attrib);
- }
- g_slist_free(attribs);
- } while (pango_attr_iterator_next(iter));
- pango_attr_iterator_destroy(iter);
-
- g_match_info_next(match_info, NULL);
- }
-
- g_match_info_free(match_info);
-}
-
-/** @private */
-G_GNUC_INTERNAL void
-gtk_experiment_transcript_free_formats(GSList *formats)
-{
- for (GSList *cur = formats; cur != NULL; cur = cur->next) {
- GtkExperimentTranscriptFormat *fmt =
- (GtkExperimentTranscriptFormat *)cur->data;
-
- gtk_experiment_transcript_free_format(fmt);
- g_free(fmt);
- }
-
- g_slist_free(formats);
-}
-
-/*
- * API
- */
-
-/**
- * @brief Load a format file to use with the transcript widget
- *
- * Loading a format file applies additional formattings (highlighting) to the
- * transcript's contributions according to the rules specified in the file.
- * For information about the format file syntax and semantics, refer to the
- * "Experiment Player" manual.
- *
- * The format file is parsed and and compiled to an internal representation.
- *
- * @param trans Widget instance
- * @param filename File name of format file to load (\c NULL or empty string
- * resets any formattings of a previously loaded file)
- * @param error GError to set on failure, or \c NULL
- * @return \c TRUE on success, else \c FALSE
- */
-gboolean
-gtk_experiment_transcript_load_formats(GtkExperimentTranscript *trans,
- const gchar *filename,
- GError **error)
-{
- FILE *file;
- gchar buf[1024];
- gint cur_line = 0;
-
- gboolean res = FALSE;
-
- g_return_val_if_fail(error == NULL || *error == NULL, FALSE);
-
- gtk_experiment_transcript_free_formats(trans->priv->formats);
- trans->priv->formats = NULL;
-
- if (filename == NULL || !*filename) {
- res = TRUE;
- goto redraw;
- }
-
- if ((file = g_fopen(filename, "r")) == NULL) {
- g_set_error(error,
- GTK_EXPERIMENT_TRANSCRIPT_ERROR,
- GTK_EXPERIMENT_TRANSCRIPT_ERROR_FILEOPEN,
- "Failed to open format file \"%s\":\n%s",
- filename, g_strerror(errno));
-
- goto redraw;
- }
-
- while (fgets((char *)buf, sizeof(buf), file) != NULL) {
- GtkExperimentTranscriptFormat *fmt;
-
- cur_line++;
-
- if (!feof(file) && !is_newline(buf[strlen(buf) - 1])) {
- g_set_error(error,
- GTK_EXPERIMENT_TRANSCRIPT_ERROR,
- GTK_EXPERIMENT_TRANSCRIPT_ERROR_LINELENGTH,
- "Line %d in file \"%s\" is too long. "
- "It must be less than %d characters.",
- cur_line, filename, (int)sizeof(buf));
-
- fclose(file);
- gtk_experiment_transcript_free_formats(trans->priv->formats);
- trans->priv->formats = NULL;
-
- goto redraw;
- }
-
- g_strchug(buf);
-
- /* strip new line chars from end of `buf' */
- for (gchar *p = buf + strlen(buf) - 1;
- p >= buf && is_newline(*p);
- p--)
- *p = '\0';
-
- if (*buf == '#' || *buf == '\0')
- continue;
-
- fmt = g_new(GtkExperimentTranscriptFormat, 1);
-
- if (!gtk_experiment_transcript_parse_format(fmt, buf, error)) {
- g_prefix_error(error,
- "Error parsing \"%s\" on line %d:\n",
- filename, cur_line);
-
- g_free(fmt);
- fclose(file);
- gtk_experiment_transcript_free_formats(trans->priv->formats);
- trans->priv->formats = NULL;
-
- goto redraw;
- }
-
- trans->priv->formats = g_slist_prepend(trans->priv->formats, fmt);
- }
- trans->priv->formats = g_slist_reverse(trans->priv->formats);
-
- fclose(file);
- res = TRUE;
-
-redraw:
- gtk_experiment_transcript_text_layer_redraw(trans);
- return res;
-}
-
-/**
- * @brief Specify an interactive format string for a transcript widget
- *
- * Associates a single format rule with a transcript widget. The formatting
- * changes are cumulatively applied after any changes introduced by a format
- * file loaded into the widget. The interactive format rule is independant of
- * any format file rules, that is it is not reset when format file rules are
- * reset.
- * A rule may also be given without Pango markup (plain regular expression),
- * applying default formattings for that regular expression. Default formattings
- * may be configured via public instance attributes of the widget.
- * For information about the format rule syntax and semantics, refer to the
- * "Experiment Player" manual.
- *
- * @sa gtk_experiment_transcript_load_formats
- *
- * @param trans Widget instance
- * @param format_str Format rule string (with or without markup)
- * @param with_markup Must be \c TRUE if the format_str contains Pango markup,
- * else \c FALSE
- * @param error GError to set on failure, or \c NULL
- * @return \c TRUE on success, else \c FALSE
- */
-gboolean
-gtk_experiment_transcript_set_interactive_format(GtkExperimentTranscript *trans,
- const gchar *format_str,
- gboolean with_markup,
- GError **error)
-{
- GtkExperimentTranscriptFormat *fmt = &trans->priv->interactive_format;
-
- gchar *pattern;
- PangoAttribute *attrib;
-
- gboolean res = FALSE;
-
- g_return_val_if_fail(error == NULL || *error == NULL, FALSE);
-
- gtk_experiment_transcript_free_format(fmt);
- fmt->regexp = NULL;
- fmt->attribs = NULL;
-
- if (format_str == NULL || !*format_str) {
- res = TRUE;
- goto redraw;
- }
-
- if (with_markup) {
- res = gtk_experiment_transcript_parse_format(fmt, format_str,
- error);
- goto redraw;
- }
- /* else if (!with_markup) */
-
- fmt->attribs = pango_attr_list_new();
- g_warn_if_fail(fmt->attribs != NULL);
- if (fmt->attribs == NULL)
- goto redraw;
-
- if (trans->interactive_format.default_font != NULL) {
- attrib = pango_attr_font_desc_new(trans->interactive_format.default_font);
- attrib->end_index = 1;
- pango_attr_list_insert(fmt->attribs, attrib);
- }
- if (trans->interactive_format.default_text_color != NULL) {
- GdkColor *color = trans->interactive_format.default_text_color;
-
- attrib = pango_attr_foreground_new(color->red,
- color->green,
- color->blue);
- attrib->end_index = 1;
- pango_attr_list_insert(fmt->attribs, attrib);
- }
- if (trans->interactive_format.default_bg_color != NULL) {
- GdkColor *color = trans->interactive_format.default_bg_color;
-
- attrib = pango_attr_background_new(color->red,
- color->green,
- color->blue);
- attrib->end_index = 1;
- pango_attr_list_insert(fmt->attribs, attrib);
- }
-
- pattern = g_strconcat("(", format_str, ")", NULL);
- fmt->regexp = g_regex_new(pattern, FORMAT_REGEX_COMPILE_FLAGS, 0, error);
- g_free(pattern);
- if (fmt->regexp == NULL) {
- gtk_experiment_transcript_free_format(fmt);
- fmt->attribs = NULL;
-
- goto redraw;
- }
-
- if (g_regex_get_capture_count(fmt->regexp) != 1) {
- g_set_error(error,
- GTK_EXPERIMENT_TRANSCRIPT_ERROR,
- GTK_EXPERIMENT_TRANSCRIPT_ERROR_REGEXCAPTURES,
- "Additional regular expression captures not allowed");
-
- gtk_experiment_transcript_free_format(fmt);
- fmt->regexp = NULL;
- fmt->attribs = NULL;
-
- goto redraw;
- }
- res = TRUE;
-
-redraw:
- gtk_experiment_transcript_text_layer_redraw(trans);
- return res;
-}
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