libmail/common/s_string.c

4  * The contents of this file are subject to the terms of the
24  * Use is subject to license terms.
38 /* global to this file */
111 	 *  take a larger increment to avoid mallocing too often
166 	sp->ptr = sp->end - (size_t)1;	/* point to NULL terminator */
170 /* convert string to lower case */
187 /* append a char array to a string */
189 s_append(string *to, char *from)
191 	if (to == NULL)
192 		to = s_new();
194 		return (to);
196 		s_putc(to, (int)(unsigned int)*from);
197 	s_terminate(to);
198 	return (to);
204  * The `lineortoken' variable indicates whether the sequence to beinput
207  *	FILE *fp;		stream to read from
208  *	string *to;		where to put token
211  * Returns a pointer to the string or NULL. Trailing newline is stripped off.
214 s_seq_read(FILE *fp, string *to, int lineortoken)
227 			if (to != NULL)
228 				s_terminate(to);
247 	if (to == NULL)
248 		to = s_new();
256 				s_putc(to, (int)(unsigned int)'\\');
257 				s_putc(to, c);
264 			s_terminate(to);
265 			return (to);
269 				s_terminate(to);
270 				return (to);
274 			s_putc(to, c);
287 		string *to = s_new();
289 			s_putc(to, (int)(unsigned int)*from->ptr);
292 		s_terminate(to);
293 		s_restart(to);
294 		/* LINT: warning due to lint bug */
296 		return (to);
300 		string *to = s_clone(from);
303 		return (to);
311  * Append an input line to a string.
313  * Returns a pointer to the string (or NULL).
317 s_read_line(FILE *fp, string *to)
322 	s_terminate(to);
333 			s_terminate(to);
334 			return (to->ptr - len);
336 			s_putc(to, (int)(unsigned int)'\n');
337 			s_terminate(to);
338 			return (to->ptr - len);
340 			s_putc(to, c);
351 s_read_to_eof(FILE *fp, string *to)
356 	s_terminate(to);
362 		have = to->end - to->ptr;
364 			s_simplegrow(to, (size_t)4096);
367 		have = to->end - to->ptr;
368 		got = fread(to->ptr, (size_t)1, have, fp);
371 		/* LINT: warning due to lint bug */
372 		to->ptr += got;
376 	s_terminate(to);
377 	return (to->ptr - to->base);
384  *	string *from;	string to parse
385  *	string *to;	where to put parsed token
388 s_parse(string *from, string *to)
394 	if (to == NULL)
395 		to = s_new();
399 			s_putc(to, (int)(unsigned int)*from->ptr);
405 			s_putc(to, (int)(unsigned int)*from->ptr);
410 			s_putc(to, (int)(unsigned int)*from->ptr);
412 	s_terminate(to);
414 	return (to);