2 * Copyright (c) 1992 Diomidis Spinellis.
3 * Copyright (c) 1992, 1993
4 * The Regents of the University of California. All rights reserved.
6 * This code is derived from software contributed to Berkeley by
7 * Diomidis Spinellis of Imperial College, University of London.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 static char copyright[] =
40 "@(#) Copyright (c) 1992, 1993\n\
41 The Regents of the University of California. All rights reserved.\n";
45 static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/3/94";
48 #include <sys/types.h>
64 * Linked list of units (strings and files) to be compiled
67 struct s_compunit *next;
68 enum e_cut {CU_FILE, CU_STRING} type;
69 char *s; /* Pointer to string or fname */
73 * Linked list pointer to compilation units and pointer to current
76 static struct s_compunit *script, **cu_nextp = &script;
79 * Linked list of files to be processed
87 * Linked list pointer to files and pointer to current
90 static struct s_flist *files, **fl_nextp = &files;
92 int aflag, eflag, nflag;
95 * Current file and line number; line numbers restart across compilation
96 * units, but span across input files.
98 char *fname; /* File name. */
100 int lastline; /* TRUE on the last line of the last file */
102 static void add_compunit __P((enum e_cut, char *));
103 static void add_file __P((char *));
113 while ((c = getopt(argc, argv, "ae:f:n")) != EOF)
120 add_compunit(CU_STRING, optarg);
124 add_compunit(CU_FILE, optarg);
131 (void)fprintf(stderr,
132 "usage:\tsed script [-an] [file ...]\n\tsed [-an] [-e script] ... [-f scipt_file] ... [file ...]\n");
138 /* First usage case; script is the first arg */
139 if (!eflag && !fflag && *argv) {
140 add_compunit(CU_STRING, *argv);
146 /* Continue with first and start second usage */
148 for (; *argv; argv++)
155 err(FATAL, "stdout: %s", strerror(errno));
160 * Like fgets, but go through the chain of compilation units chaining them
161 * together. Empty strings and files are ignored.
168 static enum {ST_EOF, ST_FILE, ST_STRING} state = ST_EOF;
169 static FILE *f; /* Current open file */
170 static char *s; /* Current pointer inside string */
171 static char string_ident[30];
180 switch (script->type) {
182 if ((f = fopen(script->s, "r")) == NULL)
184 "%s: %s", script->s, strerror(errno));
189 if ((snprintf(string_ident,
190 sizeof(string_ident), "\"%s\"", script->s)) >=
191 sizeof(string_ident) - 1)
192 (void)strcpy(string_ident +
193 sizeof(string_ident) - 6, " ...\"");
194 fname = string_ident;
200 if ((p = fgets(buf, n, f)) != NULL) {
202 if (linenum == 1 && buf[0] == '#' && buf[1] == 'n')
206 script = script->next;
211 if (linenum == 0 && s[0] == '#' && s[1] == 'n')
223 if (s == script->s) {
224 script = script->next;
227 script = script->next;
247 * Like fgets, but go through the list of files chaining them together.
248 * Set len to the length of the line.
253 enum e_spflag spflag;
255 static FILE *f; /* Current open file */
260 /* Advance to first non-empty file */
266 if (files->fname == NULL) {
270 fname = files->fname;
271 if ((f = fopen(fname, "r")) == NULL)
273 fname, strerror(errno));
275 if ((c = getc(f)) != EOF) {
289 * Use fgetln so that we can handle essentially infinite input data.
290 * Can't use the pointer into the stdio buffer as the process space
291 * because the ungetc() can cause it to move.
295 err(FATAL, "%s: %s", fname, strerror(errno ? errno : EIO));
296 cspace(sp, p, len, spflag);
299 /* Advance to next non-empty file */
300 while ((c = getc(f)) == EOF) {
307 if (files->fname == NULL) {
311 fname = files->fname;
312 if ((f = fopen(fname, "r")) == NULL)
313 err(FATAL, "%s: %s", fname, strerror(errno));
321 * Add a compilation unit to the linked list
324 add_compunit(type, s)
328 struct s_compunit *cu;
330 cu = xmalloc(sizeof(struct s_compunit));
335 cu_nextp = &cu->next;
339 * Add a file to the linked list
347 fp = xmalloc(sizeof(struct s_flist));
351 fl_nextp = &fp->next;