diff options
Diffstat (limited to 'sed/sed.c')
| -rw-r--r-- | sed/sed.c | 272 |
1 files changed, 160 insertions, 112 deletions
@@ -1,6 +1,5 @@ /* GNU SED, a batch stream editor. - Copyright (C) 1989,90,91,92,93,94,95,98,99,2002,2003,2006,2008,2009,2010 - Free Software Foundation, Inc. + Copyright (C) 1989-2016 Free Software Foundation, Inc. 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 @@ -20,11 +19,15 @@ #include "sed.h" +#include <limits.h> #include <stdio.h> #include <string.h> #include <stdlib.h> #include <sys/types.h> +#include <unistd.h> #include "getopt.h" +#include "progname.h" +#include "version.h" #include "version-etc.h" @@ -34,8 +37,6 @@ _("Ken Pizzini"), \ _("Paolo Bonzini") -char *program_name; - int extended_regexp_flags = 0; /* one-byte buffer delimiter */ @@ -53,12 +54,15 @@ bool separate_files = false; /* If set, follow symlinks when processing in place */ bool follow_symlinks = false; +/* If set, opearate in 'sandbox' mode */ +bool sandbox = false; + /* How do we edit files in-place? (we don't if NULL) */ char *in_place_extension = NULL; /* The mode to use to read/write files, either "r"/"w" or "rb"/"wb". */ -char *read_mode = "r"; -char *write_mode = "w"; +char const *read_mode = "r"; +char const *write_mode = "w"; /* Do we need to be pedantically POSIX compliant? */ enum posixicity_types posixicity; @@ -69,10 +73,40 @@ countT lcmd_out_line_len = 70; /* The complete compiled SED program that we are going to run: */ static struct vector *the_program = NULL; +/* When we've created a temporary for an in-place update, + we may have to exit before the rename. This is the name + of the temporary that we'll have to unlink via an atexit- + registered cleanup function. */ +static char const *G_file_to_unlink; + +struct localeinfo localeinfo; + +/* When exiting between temporary file creation and the rename + associated with a sed -i invocation, remove that file. */ +static void +cleanup (void) +{ + if (G_file_to_unlink) + unlink (G_file_to_unlink); +} + +/* Note that FILE must be removed upon exit. */ +void +register_cleanup_file (char const *file) +{ + G_file_to_unlink = file; +} + +/* Clear the global file-to-unlink global. */ +void +cancel_cleanup (void) +{ + G_file_to_unlink = NULL; +} + static void usage (int); static void -contact(errmsg) - int errmsg; +contact(int errmsg) { FILE *out = errmsg ? stderr : stdout; #ifndef REG_PERL @@ -83,22 +117,18 @@ General help using GNU software: <http://www.gnu.org/gethelp/>.\n")); /* Only print the bug report address for `sed --help', otherwise we'll get reports for other people's bugs. */ if (!errmsg) - fprintf(out, _("E-mail bug reports to: <%s>.\n\ -Be sure to include the word ``%s'' somewhere in the ``Subject:'' field.\n"), - PACKAGE_BUGREPORT, PACKAGE); + fprintf(out, _("E-mail bug reports to: <%s>.\n"), PACKAGE_BUGREPORT); } -static void usage (int); -static void -usage(status) - int status; +_Noreturn static void +usage(int status) { FILE *out = status ? stderr : stdout; #ifdef REG_PERL -#define PERL_HELP _(" -R, --regexp-perl\n use Perl 5's regular expressions syntax in the script.\n") -#else -#define PERL_HELP "" +#define PERL_HELP _(" -R, --regexp-perl" \ + "\n use Perl 5's regular expressions" \ + " syntax in the script.\n") #endif fprintf(out, _("\ @@ -110,29 +140,35 @@ Usage: %s [OPTION]... {script-only-if-no-other-script} [input-file]...\n\ fprintf(out, _(" -e script, --expression=script\n\ add the script to the commands to be executed\n")); fprintf(out, _(" -f script-file, --file=script-file\n\ - add the contents of script-file to the commands to be executed\n")); + add the contents of script-file to the commands" \ + " to be executed\n")); #ifdef ENABLE_FOLLOW_SYMLINKS fprintf(out, _(" --follow-symlinks\n\ follow symlinks when processing in place\n")); #endif fprintf(out, _(" -i[SUFFIX], --in-place[=SUFFIX]\n\ edit files in place (makes backup if SUFFIX supplied)\n")); -#if defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__) || defined(MSDOS) || defined(__EMX__) +#if defined WIN32 || defined _WIN32 || defined __CYGWIN__ \ + || defined MSDOS || defined __EMX__ fprintf(out, _(" -b, --binary\n\ - open files in binary mode (CR+LFs are not processed specially)\n")); + open files in binary mode (CR+LFs are not" \ + " processed specially)\n")); #endif fprintf(out, _(" -l N, --line-length=N\n\ specify the desired line-wrap length for the `l' command\n")); fprintf(out, _(" --posix\n\ disable all GNU extensions.\n")); - fprintf(out, _(" -r, --regexp-extended\n\ - use extended regular expressions in the script.\n")); + fprintf(out, _(" -E, -r, --regexp-extended\n\ + use extended regular expressions in the script\n\ + (for portability use POSIX -E).\n")); #ifdef REG_PERL fprintf(out, PERL_HELP); #endif fprintf(out, _(" -s, --separate\n\ - consider files as separate rather than as a single continuous\n\ - long stream.\n")); + consider files as separate rather than as a single,\n\ + continuous long stream.\n")); + fprintf(out, _(" --sandbox\n\ + operate in sandbox mode.\n")); fprintf(out, _(" -u, --unbuffered\n\ load minimal amounts of data from the input files and flush\n\ the output buffers more often\n")); @@ -153,9 +189,7 @@ specified, then the standard input is read.\n\ } int -main(argc, argv) - int argc; - char **argv; +main (int argc, char **argv) { #ifdef REG_PERL #define SHORTOPTS "bsnrzRuEe:f:l:i::V:" @@ -163,7 +197,9 @@ main(argc, argv) #define SHORTOPTS "bsnrzuEe:f:l:i::V:" #endif - static struct option longopts[] = { + enum { SANDBOX_OPTION = CHAR_MAX+1 }; + + static const struct option longopts[] = { {"binary", 0, NULL, 'b'}, {"regexp-extended", 0, NULL, 'r'}, #ifdef REG_PERL @@ -178,6 +214,7 @@ main(argc, argv) {"quiet", 0, NULL, 'n'}, {"posix", 0, NULL, 'p'}, {"silent", 0, NULL, 'n'}, + {"sandbox", 0, NULL, SANDBOX_OPTION}, {"separate", 0, NULL, 's'}, {"unbuffered", 0, NULL, 'u'}, {"version", 0, NULL, 'v'}, @@ -198,7 +235,13 @@ main(argc, argv) /* Set locale according to user's wishes. */ setlocale (LC_ALL, ""); #endif + set_program_name (argv[0]); initialize_mbcs (); + init_localeinfo (&localeinfo); + + /* Arrange to remove any un-renamed temporary file, + upon premature exit. */ + atexit (cleanup); #if ENABLE_NLS @@ -220,115 +263,120 @@ main(argc, argv) { countT t = atoi(cols); if (t > 1) - lcmd_out_line_len = t-1; + lcmd_out_line_len = t-1; } myname = *argv; while ((opt = getopt_long(argc, argv, SHORTOPTS, longopts, NULL)) != EOF) { switch (opt) - { - case 'n': - no_default_output = true; - break; - case 'e': - the_program = compile_string(the_program, optarg, strlen(optarg)); - break; - case 'f': - the_program = compile_file(the_program, optarg); - break; - - case 'z': - buffer_delimiter = 0; - break; - - case 'F': - follow_symlinks = true; - break; - - case 'i': - separate_files = true; - if (optarg == NULL) - /* use no backups */ - in_place_extension = ck_strdup ("*"); - - else if (strchr(optarg, '*') != NULL) - in_place_extension = ck_strdup(optarg); - - else - { - in_place_extension = MALLOC (strlen(optarg) + 2, char); - in_place_extension[0] = '*'; - strcpy (in_place_extension + 1, optarg); - } - - break; - - case 'l': - lcmd_out_line_len = atoi(optarg); - break; - - case 'p': - posixicity = POSIXLY_BASIC; - break; + { + case 'n': + no_default_output = true; + break; + case 'e': + the_program = compile_string(the_program, optarg, strlen(optarg)); + break; + case 'f': + the_program = compile_file(the_program, optarg); + break; + + case 'z': + buffer_delimiter = 0; + break; + + case 'F': + follow_symlinks = true; + break; + + case 'i': + separate_files = true; + if (optarg == NULL) + /* use no backups */ + in_place_extension = ck_strdup ("*"); + + else if (strchr(optarg, '*') != NULL) + in_place_extension = ck_strdup(optarg); + + else + { + in_place_extension = MALLOC (strlen(optarg) + 2, char); + in_place_extension[0] = '*'; + strcpy (in_place_extension + 1, optarg); + } + + break; + + case 'l': + lcmd_out_line_len = atoi(optarg); + break; + + case 'p': + posixicity = POSIXLY_BASIC; + break; case 'b': - read_mode = "rb"; - write_mode = "wb"; - break; - - /* Undocumented, for compatibility with BSD sed. */ - case 'E': - case 'r': - if (extended_regexp_flags) - usage(4); - extended_regexp_flags = REG_EXTENDED; - break; + read_mode = "rb"; + write_mode = "wb"; + break; + case 'E': + case 'r': #ifdef REG_PERL - case 'R': - if (extended_regexp_flags) - usage(4); - extended_regexp_flags = REG_PERL; - break; + if (extended_regexp_flags && (extended_regexp_flags!=REG_EXTENDED)) + usage(EXIT_BAD_USAGE); #endif + extended_regexp_flags = REG_EXTENDED; + break; + +#ifdef REG_PERL + case 'R': + if (extended_regexp_flags && (extended_regexp_flags!=REG_PERL))) + usage(EXIT_BAD_USAGE); + extended_regexp_flags = REG_PERL; + break; +#endif + + case 's': + separate_files = true; + break; - case 's': - separate_files = true; - break; + case SANDBOX_OPTION: + sandbox = true; + break; - case 'u': - unbuffered = true; - break; + case 'u': + unbuffered = true; + break; - case 'v': - version_etc(stdout, program_name, PACKAGE_NAME, VERSION, + case 'v': + version_etc(stdout, program_name, PACKAGE_NAME, Version, AUTHORS, (char *) NULL); - contact(false); - ck_fclose (NULL); - exit (0); - case 'h': - usage(0); - default: - usage(4); - } + contact(false); + ck_fclose (NULL); + exit (EXIT_SUCCESS); + case 'h': + usage(EXIT_SUCCESS); + default: + usage(EXIT_BAD_USAGE); + } } if (!the_program) { if (optind < argc) - { - char *arg = argv[optind++]; - the_program = compile_string(the_program, arg, strlen(arg)); - } + { + char *arg = argv[optind++]; + the_program = compile_string(the_program, arg, strlen(arg)); + } else - usage(4); + usage(EXIT_BAD_USAGE); } check_final_program(the_program); return_code = process_files(the_program, argv+optind); - finish_program(the_program); + finish_program(); ck_fclose(NULL); return return_code; |