2 * (GLABELS) Label and Business Card Creation program for GNOME
4 * merge_text.c: text-file merge backend module
6 * Copyright (C) 2001 Jim Evins <evins@snaught.com>.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #include "merge-text.h"
31 #define LINE_BUF_LEN 1024
33 /*===========================================*/
35 /*===========================================*/
37 struct _glMergeTextPrivate {
51 /*===========================================*/
53 /*===========================================*/
55 static glMergeClass *parent_class = NULL;
58 /*===========================================*/
59 /* Local function prototypes */
60 /*===========================================*/
62 static void gl_merge_text_class_init (glMergeTextClass *klass);
63 static void gl_merge_text_instance_init (glMergeText *object);
64 static void gl_merge_text_finalize (GObject *object);
66 static void gl_merge_text_set_property (GObject *object,
71 static void gl_merge_text_get_property (GObject *object,
76 static GList *gl_merge_text_get_key_list (glMerge *merge);
77 static gchar *gl_merge_text_get_primary_key (glMerge *merge);
78 static void gl_merge_text_open (glMerge *merge);
79 static void gl_merge_text_close (glMerge *merge);
80 static glMergeRecord *gl_merge_text_get_record (glMerge *merge);
81 static void gl_merge_text_copy (glMerge *dst_merge,
84 static GList *parse_line (FILE *fp,
86 static void free_fields (GList **fields);
89 /*****************************************************************************/
90 /* Boilerplate object stuff. */
91 /*****************************************************************************/
93 gl_merge_text_get_type (void)
95 static GType type = 0;
99 sizeof (glMergeTextClass),
102 (GClassInitFunc) gl_merge_text_class_init,
105 sizeof (glMergeText),
107 (GInstanceInitFunc) gl_merge_text_instance_init,
110 type = g_type_register_static (GL_TYPE_MERGE,
111 "glMergeText", &info, 0);
118 gl_merge_text_class_init (glMergeTextClass *klass)
120 GObjectClass *object_class = (GObjectClass *) klass;
121 glMergeClass *merge_class = (glMergeClass *) klass;
123 gl_debug (DEBUG_MERGE, "START");
125 parent_class = g_type_class_peek_parent (klass);
127 object_class->set_property = gl_merge_text_set_property;
128 object_class->get_property = gl_merge_text_get_property;
130 g_object_class_install_property
133 g_param_spec_char ("delim", NULL, NULL,
135 (G_PARAM_READABLE | G_PARAM_WRITABLE)));
137 object_class->finalize = gl_merge_text_finalize;
139 merge_class->get_key_list = gl_merge_text_get_key_list;
140 merge_class->get_primary_key = gl_merge_text_get_primary_key;
141 merge_class->open = gl_merge_text_open;
142 merge_class->close = gl_merge_text_close;
143 merge_class->get_record = gl_merge_text_get_record;
144 merge_class->copy = gl_merge_text_copy;
146 gl_debug (DEBUG_MERGE, "END");
150 gl_merge_text_instance_init (glMergeText *merge_text)
152 gl_debug (DEBUG_MERGE, "START");
154 merge_text->private = g_new0 (glMergeTextPrivate, 1);
156 gl_debug (DEBUG_MERGE, "END");
160 gl_merge_text_finalize (GObject *object)
162 gl_debug (DEBUG_MERGE, "START");
164 g_return_if_fail (object && GL_IS_MERGE_TEXT (object));
166 G_OBJECT_CLASS (parent_class)->finalize (object);
168 gl_debug (DEBUG_MERGE, "END");
171 /*--------------------------------------------------------------------------*/
173 /*--------------------------------------------------------------------------*/
175 gl_merge_text_set_property (GObject *object,
180 glMergeText *merge_text;
182 merge_text = GL_MERGE_TEXT (object);
187 merge_text->private->delim = g_value_get_char (value);
188 gl_debug (DEBUG_MERGE, "ARG \"delim\" = \"%c\"",
189 merge_text->private->delim);
193 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
200 /*--------------------------------------------------------------------------*/
202 /*--------------------------------------------------------------------------*/
204 gl_merge_text_get_property (GObject *object,
209 glMergeText *merge_text;
211 merge_text = GL_MERGE_TEXT (object);
216 g_value_set_char (value, merge_text->private->delim);
220 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
227 /*--------------------------------------------------------------------------*/
229 /*--------------------------------------------------------------------------*/
231 gl_merge_text_get_key_list (glMerge *merge)
233 glMergeText *merge_text;
234 GList *record_list, *p_rec;
235 glMergeRecord *record;
237 gint i_field, n_fields, n_fields_max = 0;
240 /* Field keys are simply column numbers. */
242 gl_debug (DEBUG_MERGE, "BEGIN");
244 merge_text = GL_MERGE_TEXT (merge);
246 record_list = (GList *)gl_merge_get_record_list (merge);
248 for ( p_rec=record_list; p_rec!=NULL; p_rec=p_rec->next ) {
249 record = (glMergeRecord *)p_rec->data;
252 for ( p_field=record->field_list; p_field!=NULL; p_field=p_field->next ) {
255 if ( n_fields > n_fields_max ) n_fields_max = n_fields;
259 for (i_field=1; i_field <= n_fields_max; i_field++) {
260 key_list = g_list_append (key_list, g_strdup_printf ("%d", i_field));
264 gl_debug (DEBUG_MERGE, "END");
269 /*--------------------------------------------------------------------------*/
270 /* Get "primary" key. */
271 /*--------------------------------------------------------------------------*/
273 gl_merge_text_get_primary_key (glMerge *merge)
275 /* For now, let's always assume the first column is the primary key. */
276 return g_strdup ("1");
279 /*--------------------------------------------------------------------------*/
280 /* Open merge source. */
281 /*--------------------------------------------------------------------------*/
283 gl_merge_text_open (glMerge *merge)
285 glMergeText *merge_text;
288 merge_text = GL_MERGE_TEXT (merge);
290 src = gl_merge_get_src (merge);
293 merge_text->private->fp = fopen (src, "r");
299 /*--------------------------------------------------------------------------*/
300 /* Close merge source. */
301 /*--------------------------------------------------------------------------*/
303 gl_merge_text_close (glMerge *merge)
305 glMergeText *merge_text;
307 merge_text = GL_MERGE_TEXT (merge);
309 if (merge_text->private->fp != NULL) {
311 fclose (merge_text->private->fp);
312 merge_text->private->fp = NULL;
317 /*--------------------------------------------------------------------------*/
318 /* Get next record from merge source, NULL if no records left (i.e EOF) */
319 /*--------------------------------------------------------------------------*/
320 static glMergeRecord *
321 gl_merge_text_get_record (glMerge *merge)
323 glMergeText *merge_text;
326 glMergeRecord *record;
331 merge_text = GL_MERGE_TEXT (merge);
333 delim = merge_text->private->delim;
334 fp = merge_text->private->fp;
340 fields = parse_line (fp, delim);
341 if ( fields == NULL ) {
345 record = g_new0 (glMergeRecord, 1);
346 record->select_flag = TRUE;
348 for (p=fields; p != NULL; p=p->next) {
350 field = g_new0 (glMergeField, 1);
351 field->key = g_strdup_printf ("%d", i_field++);
352 #ifndef CSV_ALWAYS_UTF8
353 field->value = g_locale_to_utf8 (p->data, -1, NULL, NULL, NULL);
355 field->value = g_strdup (p->data);
358 record->field_list = g_list_append (record->field_list, field);
360 free_fields (&fields);
365 /*---------------------------------------------------------------------------*/
366 /* Copy merge_text specific fields. */
367 /*---------------------------------------------------------------------------*/
369 gl_merge_text_copy (glMerge *dst_merge,
372 glMergeText *dst_merge_text;
373 glMergeText *src_merge_text;
375 dst_merge_text = GL_MERGE_TEXT (dst_merge);
376 src_merge_text = GL_MERGE_TEXT (src_merge);
378 dst_merge_text->private->delim = src_merge_text->private->delim;
381 /*---------------------------------------------------------------------------*/
382 /* PRIVATE. Parse line (quoted values may span multiple lines). */
383 /*---------------------------------------------------------------------------*/
385 parse_line (FILE *fp,
391 enum { BEGIN, NORMAL, NORMAL_ESCAPED,
392 QUOTED, QUOTED_ESCAPED, QUOTED_QUOTE1,
396 string = g_string_new( "" );
397 while ( state != DONE ) {
405 state = NORMAL_ESCAPED;
420 string = g_string_append_c (string, c);
422 list = g_list_append (list,
423 g_strdup (string->str));
424 string = g_string_assign( string, "" );
434 state = NORMAL_ESCAPED;
444 list = g_list_append (list,
445 g_strdup (string->str));
450 string = g_string_append_c (string, c);
452 list = g_list_append (list,
453 g_strdup (string->str));
454 string = g_string_assign( string, "" );
463 string = g_string_append_c (string, '\n');
467 string = g_string_append_c (string, '\t');
471 /* Strip CR, stay ESCAPED. */
477 string = g_string_append_c (string, c);
486 state = QUOTED_ESCAPED;
489 state = QUOTED_QUOTE1;
495 /* File ended mid way through quoted item */
496 list = g_list_append (list,
497 g_strdup (string->str));
501 string = g_string_append_c (string, c);
509 string = g_string_append_c (string, '\n');
513 string = g_string_append_c (string, '\t');
517 /* Strip CR, stay ESCAPED. */
520 /* File ended mid way through quoted item */
521 list = g_list_append (list,
522 g_strdup (string->str));
526 string = g_string_append_c (string, c);
535 /* insert quotes in string, stay quoted. */
536 string = g_string_append_c (string, c);
540 /* Strip CR, return to NORMAL. */
545 /* line or file ended after quoted item */
546 list = g_list_append (list,
547 g_strdup (string->str));
552 string = g_string_append_c (string, c);
554 list = g_list_append (list,
555 g_strdup (string->str));
556 string = g_string_assign( string, "" );
564 g_assert_not_reached();
569 g_string_free( string, TRUE );
574 /*---------------------------------------------------------------------------*/
575 /* Free list of fields. */
576 /*---------------------------------------------------------------------------*/
578 free_fields (GList ** list)
582 for (p = *list; p != NULL; p = p->next) {