diff options
Diffstat (limited to 'usr.bin/sed/main.c')
-rw-r--r-- | usr.bin/sed/main.c | 352 |
1 files changed, 0 insertions, 352 deletions
diff --git a/usr.bin/sed/main.c b/usr.bin/sed/main.c deleted file mode 100644 index 14872fd..0000000 --- a/usr.bin/sed/main.c +++ /dev/null @@ -1,352 +0,0 @@ -/*- - * Copyright (c) 1992 Diomidis Spinellis. - * Copyright (c) 1992, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Diomidis Spinellis of Imperial College, University of London. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#ifndef lint -static char copyright[] = -"@(#) Copyright (c) 1992, 1993\n\ - The Regents of the University of California. All rights reserved.\n"; -#endif /* not lint */ - -#ifndef lint -static char sccsid[] = "@(#)main.c 8.2 (Berkeley) 1/3/94"; -#endif /* not lint */ - -#include <sys/types.h> - -#include <ctype.h> -#include <errno.h> -#include <fcntl.h> -#include <regex.h> -#include <stddef.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -#include "defs.h" -#include "extern.h" - -/* - * Linked list of units (strings and files) to be compiled - */ -struct s_compunit { - struct s_compunit *next; - enum e_cut {CU_FILE, CU_STRING} type; - char *s; /* Pointer to string or fname */ -}; - -/* - * Linked list pointer to compilation units and pointer to current - * next pointer. - */ -static struct s_compunit *script, **cu_nextp = &script; - -/* - * Linked list of files to be processed - */ -struct s_flist { - char *fname; - struct s_flist *next; -}; - -/* - * Linked list pointer to files and pointer to current - * next pointer. - */ -static struct s_flist *files, **fl_nextp = &files; - -int aflag, eflag, nflag; - -/* - * Current file and line number; line numbers restart across compilation - * units, but span across input files. - */ -char *fname; /* File name. */ -u_long linenum; -int lastline; /* TRUE on the last line of the last file */ - -static void add_compunit __P((enum e_cut, char *)); -static void add_file __P((char *)); - -int -main(argc, argv) - int argc; - char *argv[]; -{ - int c, fflag; - - fflag = 0; - while ((c = getopt(argc, argv, "ae:f:n")) != EOF) - switch (c) { - case 'a': - aflag = 1; - break; - case 'e': - eflag = 1; - add_compunit(CU_STRING, optarg); - break; - case 'f': - fflag = 1; - add_compunit(CU_FILE, optarg); - break; - case 'n': - nflag = 1; - break; - default: - case '?': - (void)fprintf(stderr, -"usage:\tsed script [-an] [file ...]\n\tsed [-an] [-e script] ... [-f scipt_file] ... [file ...]\n"); - exit(1); - } - argc -= optind; - argv += optind; - - /* First usage case; script is the first arg */ - if (!eflag && !fflag && *argv) { - add_compunit(CU_STRING, *argv); - argv++; - } - - compile(); - - /* Continue with first and start second usage */ - if (*argv) - for (; *argv; argv++) - add_file(*argv); - else - add_file(NULL); - process(); - cfclose(prog, NULL); - if (fclose(stdout)) - err(FATAL, "stdout: %s", strerror(errno)); - exit (0); -} - -/* - * Like fgets, but go through the chain of compilation units chaining them - * together. Empty strings and files are ignored. - */ -char * -cu_fgets(buf, n) - char *buf; - int n; -{ - static enum {ST_EOF, ST_FILE, ST_STRING} state = ST_EOF; - static FILE *f; /* Current open file */ - static char *s; /* Current pointer inside string */ - static char string_ident[30]; - char *p; - -again: - switch (state) { - case ST_EOF: - if (script == NULL) - return (NULL); - linenum = 0; - switch (script->type) { - case CU_FILE: - if ((f = fopen(script->s, "r")) == NULL) - err(FATAL, - "%s: %s", script->s, strerror(errno)); - fname = script->s; - state = ST_FILE; - goto again; - case CU_STRING: - if ((snprintf(string_ident, - sizeof(string_ident), "\"%s\"", script->s)) >= - sizeof(string_ident) - 1) - (void)strcpy(string_ident + - sizeof(string_ident) - 6, " ...\""); - fname = string_ident; - s = script->s; - state = ST_STRING; - goto again; - } - case ST_FILE: - if ((p = fgets(buf, n, f)) != NULL) { - linenum++; - if (linenum == 1 && buf[0] == '#' && buf[1] == 'n') - nflag = 1; - return (p); - } - script = script->next; - (void)fclose(f); - state = ST_EOF; - goto again; - case ST_STRING: - if (linenum == 0 && s[0] == '#' && s[1] == 'n') - nflag = 1; - p = buf; - for (;;) { - if (n-- <= 1) { - *p = '\0'; - linenum++; - return (buf); - } - switch (*s) { - case '\0': - state = ST_EOF; - if (s == script->s) { - script = script->next; - goto again; - } else { - script = script->next; - *p = '\0'; - linenum++; - return (buf); - } - case '\n': - *p++ = '\n'; - *p = '\0'; - s++; - linenum++; - return (buf); - default: - *p++ = *s++; - } - } - } - /* NOTREACHED */ -} - -/* - * Like fgets, but go through the list of files chaining them together. - * Set len to the length of the line. - */ -int -mf_fgets(sp, spflag) - SPACE *sp; - enum e_spflag spflag; -{ - static FILE *f; /* Current open file */ - size_t len; - char c, *p; - - if (f == NULL) - /* Advance to first non-empty file */ - for (;;) { - if (files == NULL) { - lastline = 1; - return (0); - } - if (files->fname == NULL) { - f = stdin; - fname = "stdin"; - } else { - fname = files->fname; - if ((f = fopen(fname, "r")) == NULL) - err(FATAL, "%s: %s", - fname, strerror(errno)); - } - if ((c = getc(f)) != EOF) { - (void)ungetc(c, f); - break; - } - (void)fclose(f); - files = files->next; - } - - if (lastline) { - sp->len = 0; - return (0); - } - - /* - * Use fgetln so that we can handle essentially infinite input data. - * Can't use the pointer into the stdio buffer as the process space - * because the ungetc() can cause it to move. - */ - p = fgetln(f, &len); - if (ferror(f)) - err(FATAL, "%s: %s", fname, strerror(errno ? errno : EIO)); - cspace(sp, p, len, spflag); - - linenum++; - /* Advance to next non-empty file */ - while ((c = getc(f)) == EOF) { - (void)fclose(f); - files = files->next; - if (files == NULL) { - lastline = 1; - return (1); - } - if (files->fname == NULL) { - f = stdin; - fname = "stdin"; - } else { - fname = files->fname; - if ((f = fopen(fname, "r")) == NULL) - err(FATAL, "%s: %s", fname, strerror(errno)); - } - } - (void)ungetc(c, f); - return (1); -} - -/* - * Add a compilation unit to the linked list - */ -static void -add_compunit(type, s) - enum e_cut type; - char *s; -{ - struct s_compunit *cu; - - cu = xmalloc(sizeof(struct s_compunit)); - cu->type = type; - cu->s = s; - cu->next = NULL; - *cu_nextp = cu; - cu_nextp = &cu->next; -} - -/* - * Add a file to the linked list - */ -static void -add_file(s) - char *s; -{ - struct s_flist *fp; - - fp = xmalloc(sizeof(struct s_flist)); - fp->next = NULL; - *fl_nextp = fp; - fp->fname = s; - fl_nextp = &fp->next; -} |