Reference http://www.opengroup.org/onlinepubs/007904975/utilities/sed.html
*/
-#include <stdio.h>
-#include <unistd.h> /* for getopt() */
-#include <errno.h>
-#include <ctype.h> /* for isspace() */
-#include <stdlib.h>
-#include <string.h>
#include "busybox.h"
#include "xregex.h"
struct sed_cmd_s *next; /* Next command (linked list, NULL terminated) */
} sed_cmd_t;
-static const char bad_format_in_subst[] =
- "bad format in substitution expression";
static const char *const semicolon_whitespace = "; \n\r\t\v";
struct sed_globals
{
sed_cmd_t *sed_cmd = bbg.sed_cmd_head.next;
- llist_free_contents(bbg.append_head);
+ llist_free(bbg.append_head, free);
while (sed_cmd) {
sed_cmd_t *sed_cmd_next = sed_cmd->next;
if(sed_cmd->file)
- bb_xprint_and_close_file(sed_cmd->file);
+ xprint_and_close_file(sed_cmd->file);
if (sed_cmd->beg_match) {
regfree(sed_cmd->beg_match);
/* strdup, replacing "\n" with '\n', and "\delimiter" with 'delimiter' */
-static void parse_escapes(char *dest, const char *string, int len, char from, char to)
+static void parse_escapes(char *dest, char *string, int len, char from, char to)
{
int i=0;
*dest=0;
}
-static char *copy_parsing_escapes(const char *string, int len)
+static char *copy_parsing_escapes(char *string, int len)
{
char *dest=xmalloc(len+1);
* index_of_next_unescaped_regexp_delim - walks left to right through a string
* beginning at a specified index and returns the index of the next regular
* expression delimiter (typically a forward * slash ('/')) not preceded by
- * a backslash ('\').
+ * a backslash ('\'). A negative delimiter disables square bracket checking.
*/
-static int index_of_next_unescaped_regexp_delim(const char delimiter,
- const char *str)
+static int index_of_next_unescaped_regexp_delim(int delimiter, char *str)
{
int bracket = -1;
int escaped = 0;
int idx = 0;
char ch;
+ if (delimiter < 0) {
+ bracket--;
+ delimiter *= -1;
+ }
+
for (; (ch = str[idx]); idx++) {
- if (bracket != -1) {
+ if (bracket >= 0) {
if (ch == ']' && !(bracket == idx - 1 || (bracket == idx - 2
&& str[idx - 1] == '^')))
bracket = -1;
escaped = 0;
else if (ch == '\\')
escaped = 1;
- else if (ch == '[')
+ else if (bracket == -1 && ch == '[')
bracket = idx;
else if (ch == delimiter)
return idx;
}
/* if we make it to here, we've hit the end of the string */
- return -1;
+ bb_error_msg_and_die("unmatched '%c'",delimiter);
}
/*
* Returns the index of the third delimiter
*/
-static int parse_regex_delim(const char *cmdstr, char **match, char **replace)
+static int parse_regex_delim(char *cmdstr, char **match, char **replace)
{
- const char *cmdstr_ptr = cmdstr;
+ char *cmdstr_ptr = cmdstr;
char delimiter;
int idx = 0;
/* verify that the 's' or 'y' is followed by something. That something
* (typically a 'slash') is now our regexp delimiter... */
- if (*cmdstr == '\0') bb_error_msg_and_die(bad_format_in_subst);
+ if (*cmdstr == '\0')
+ bb_error_msg_and_die("bad format in substitution expression");
delimiter = *(cmdstr_ptr++);
/* save the match string */
idx = index_of_next_unescaped_regexp_delim(delimiter, cmdstr_ptr);
- if (idx == -1) {
- bb_error_msg_and_die(bad_format_in_subst);
- }
*match = copy_parsing_escapes(cmdstr_ptr, idx);
/* save the replacement string */
cmdstr_ptr += idx + 1;
- idx = index_of_next_unescaped_regexp_delim(delimiter, cmdstr_ptr);
- if (idx == -1) {
- bb_error_msg_and_die(bad_format_in_subst);
- }
+ idx = index_of_next_unescaped_regexp_delim(-delimiter, cmdstr_ptr);
*replace = copy_parsing_escapes(cmdstr_ptr, idx);
return ((cmdstr_ptr - cmdstr) + idx);
if (*my_str == '\\') delimiter = *(++pos);
else delimiter = '/';
next = index_of_next_unescaped_regexp_delim(delimiter, ++pos);
- if (next == -1)
- bb_error_msg_and_die("unterminated match expression");
-
- temp=copy_parsing_escapes(pos,next);
+ temp = copy_parsing_escapes(pos,next);
*regex = (regex_t *) xmalloc(sizeof(regex_t));
xregcomp(*regex, temp, bbg.regex_type|REG_NEWLINE);
free(temp);
/* Move position to next character after last delimiter */
- pos+=(next+1);
+ pos += (next+1);
}
return pos - my_str;
}
/* Grab a filename. Whitespace at start is skipped, then goes to EOL. */
-static int parse_file_cmd(sed_cmd_t *sed_cmd, const char *filecmdstr, char **retval)
+static int parse_file_cmd(sed_cmd_t *sed_cmd, char *filecmdstr, char **retval)
{
int start = 0, idx, hack=0;
/* If lines glued together, put backslash back. */
if(filecmdstr[idx]=='\n') hack=1;
if(idx==start) bb_error_msg_and_die("Empty filename");
- *retval = bb_xstrndup(filecmdstr+start, idx-start+hack+1);
+ *retval = xstrndup(filecmdstr+start, idx-start+hack+1);
if(hack) *(idx+*retval)='\\';
return idx;
}
-static int parse_subst_cmd(sed_cmd_t *const sed_cmd, char *substr)
+static int parse_subst_cmd(sed_cmd_t *sed_cmd, char *substr)
{
int cflags = bbg.regex_type;
char *match;
} else if(isspace(*cmdstr)) cmdstr++;
else break;
}
- sed_cmd->string = bb_xstrdup(cmdstr);
+ sed_cmd->string = xstrdup(cmdstr);
parse_escapes(sed_cmd->string,sed_cmd->string,strlen(cmdstr),0,0);
cmdstr += strlen(cmdstr);
/* handle file cmds: (r)ead */
bb_error_msg_and_die("Command only uses one address");
cmdstr += parse_file_cmd(sed_cmd, cmdstr, &sed_cmd->string);
if(sed_cmd->cmd=='w')
- sed_cmd->file=bb_xfopen(sed_cmd->string,"w");
+ sed_cmd->file=xfopen(sed_cmd->string,"w");
/* handle branch commands */
} else if (strchr(":btT", sed_cmd->cmd)) {
int length;
while(isspace(*cmdstr)) cmdstr++;
length = strcspn(cmdstr, semicolon_whitespace);
if (length) {
- sed_cmd->string = bb_xstrndup(cmdstr, length);
+ sed_cmd->string = xstrndup(cmdstr, length);
cmdstr += length;
}
}
/* Append this line to any unfinished line from last time. */
if (bbg.add_cmd_line) {
- cmdstr = bb_xasprintf("%s\n%s", bbg.add_cmd_line, cmdstr);
+ cmdstr = xasprintf("%s\n%s", bbg.add_cmd_line, cmdstr);
free(bbg.add_cmd_line);
bbg.add_cmd_line = cmdstr;
- } else bbg.add_cmd_line=NULL;
+ }
/* If this line ends with backslash, request next line. */
temp=strlen(cmdstr);
if(temp && cmdstr[temp-1]=='\\') {
- if (!bbg.add_cmd_line) bbg.add_cmd_line = bb_xstrdup(cmdstr);
+ if (!bbg.add_cmd_line) bbg.add_cmd_line = xstrdup(cmdstr);
bbg.add_cmd_line[temp-1] = 0;
return;
}
cmdstr++;
idx = get_address(cmdstr, &sed_cmd->end_line, &sed_cmd->end_match);
- if (!idx) bb_error_msg_and_die("no address after comma\n");
+ if (!idx) bb_error_msg_and_die("no address after comma");
cmdstr += idx;
}
bbg.pipeline.buf[bbg.pipeline.idx++] = c;
}
-static void do_subst_w_backrefs(const char *line, const char *replace)
+static void do_subst_w_backrefs(char *line, char *replace)
{
int i,j;
end of match and continue */
if(sed_cmd->which_match && sed_cmd->which_match!=match_count) {
for(i=0;i<bbg.regmatch[0].rm_eo;i++)
- pipe_putc(oldline[i]);
+ pipe_putc(*(oldline++));
continue;
}
}
/* Set command pointer to point to this label. (Does not handle null label.) */
-static sed_cmd_t *branch_to(const char *label)
+static sed_cmd_t *branch_to(char *label)
{
sed_cmd_t *sed_cmd;
static void append(char *s)
{
- bbg.append_head = llist_add_to_end(bbg.append_head, bb_xstrdup(s));
+ llist_add_to_end(&bbg.append_head, xstrdup(s));
}
static void flush_append(void)
if(!no_newline) fputc('\n',file);
if(ferror(file)) {
- fprintf(stderr,"Write failed.\n");
- exit(4); /* It's what gnu sed exits with... */
+ bb_default_error_retval = 4; /* It's what gnu sed exits with... */
+ bb_error_msg_and_die(bb_msg_write_error);
}
return no_newline;
char *tmp = strchr(pattern_space,'\n');
if(tmp) {
- tmp=bb_xstrdup(tmp+1);
+ tmp=xstrdup(tmp+1);
free(pattern_space);
pattern_space=tmp;
goto restart;
while ((line = bb_get_chomped_line_from_file(rfile))
!= NULL)
append(line);
- bb_xprint_and_close_file(rfile);
+ xprint_and_close_file(rfile);
}
break;
}
case 'g': /* Replace pattern space with hold space */
free(pattern_space);
- pattern_space = bb_xstrdup(bbg.hold_space ? bbg.hold_space : "");
+ pattern_space = xstrdup(bbg.hold_space ? bbg.hold_space : "");
break;
case 'G': /* Append newline and hold space to pattern space */
{
}
case 'h': /* Replace hold space with pattern space */
free(bbg.hold_space);
- bbg.hold_space = bb_xstrdup(pattern_space);
+ bbg.hold_space = xstrdup(pattern_space);
break;
case 'H': /* Append newline and pattern space to hold space */
{
case 'x': /* Exchange hold and pattern space */
{
char *tmp = pattern_space;
- pattern_space = bbg.hold_space;
+ pattern_space = bbg.hold_space ? : xzalloc(1);
no_newline=0;
bbg.hold_space = tmp;
break;
static void add_cmd_block(char *cmdstr)
{
int go=1;
- char *temp=bb_xstrdup(cmdstr),*temp2=temp;
+ char *temp=xstrdup(cmdstr),*temp2=temp;
while(go) {
int len=strcspn(temp2,"\n");
FILE *cmdfile;
char *line;
- cmdfile = bb_xfopen(optarg, "r");
+ cmdfile = xfopen(optarg, "r");
while ((line = bb_get_chomped_line_from_file(cmdfile)) != NULL) {
add_cmd(line);
getpat=0;
free(line);
}
- bb_xprint_and_close_file(cmdfile);
+ xprint_and_close_file(cmdfile);
break;
}
* files were specified or '-' was specified, take input from stdin.
* Otherwise, we process all the files specified. */
if (argv[optind] == NULL) {
- if(bbg.in_place) bb_error_msg_and_die("Filename required for -i");
+ if(bbg.in_place) bb_error_msg_and_die(bb_msg_requires_arg, "-i");
add_input_file(stdin);
process_files();
} else {
struct stat statbuf;
int nonstdoutfd;
- bbg.outname=bb_xstrndup(argv[i],strlen(argv[i])+6);
+ bbg.outname=xstrndup(argv[i],strlen(argv[i])+6);
strcat(bbg.outname,"XXXXXX");
if(-1==(nonstdoutfd=mkstemp(bbg.outname)))
bb_error_msg_and_die("no temp file");
projects / oweals / busybox.git / blobdiff