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authorEric Andersen1999-10-29 00:07:31 +0000
committerEric Andersen1999-10-29 00:07:31 +0000
commitc1525e84dd6a3ac8252ce10e6ae605bd37d60797 (patch)
treebef01229299c4ad89f2e353df0e88af292a8795c /editors/sed.c
parent6b6b3f6ef2f44898a8bddfaae93cc4ef3aa79661 (diff)
downloadbusybox-c1525e84dd6a3ac8252ce10e6ae605bd37d60797.zip
busybox-c1525e84dd6a3ac8252ce10e6ae605bd37d60797.tar.gz
Stuff
Diffstat (limited to 'editors/sed.c')
-rw-r--r--editors/sed.c110
1 files changed, 62 insertions, 48 deletions
diff --git a/editors/sed.c b/editors/sed.c
index 4dd552a..a3e635d 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -33,12 +33,10 @@
static const char sed_usage[] =
"sed [-n] [-e script] [file...]\n"
-"Allowed scripts come in two forms:\n"
-"'/regexp/[gp]'\n"
-"\tattempt to match regexp against the pattern space\n"
+"Allowed scripts come in the following form:\n\n"
"'s/regexp/replacement/[gp]'\n"
"\tattempt to match regexp against the pattern space\n"
-"\tand if successful replaces the matched portion with replacement."
+"\tand if successful replaces the matched portion with replacement.\n\n"
"Options:\n"
"-e\tadd the script to the commands to be executed\n"
"-n\tsuppress automatic printing of pattern space\n\n"
@@ -49,64 +47,86 @@ static const char sed_usage[] =
#endif
-static int replaceFlag = FALSE;
-static int noprintFlag = FALSE;
extern int sed_main (int argc, char **argv)
{
FILE *fp;
- const char *needle;
- const char *name;
- const char *cp;
- int tellName=TRUE;
+ char *needle=NULL, *newNeedle=NULL;
+ char *name;
+ char *cp;
int ignoreCase=FALSE;
- int tellLine=FALSE;
- long line;
- char haystack[BUF_SIZE];
-
- ignoreCase = FALSE;
- tellLine = FALSE;
+ int foundOne=FALSE;
+ int noprintFlag=FALSE;
+ int stopNow;
+ char *haystack;
argc--;
argv++;
if (argc < 1) {
- usage(grep_usage);
+ usage(sed_usage);
}
if (**argv == '-') {
argc--;
cp = *argv++;
+ stopNow=FALSE;
- while (*++cp)
+ while (*++cp && stopNow==FALSE)
switch (*cp) {
case 'n':
noprintFlag = TRUE;
break;
case 'e':
- if (*(*argv)+1 != '\'' && **argv != '\"') {
- if (--argc == 0)
- usage( mkdir_usage);
- ++argv;
- if (*(*argv)+1 != '\'' && **argv != '\"') {
- usage( mkdir_usage);
+ if (*(cp+1)==0 && --argc < 0) {
+ fprintf(stderr, "A\n");
+ usage( sed_usage);
}
- /* Find the specified modes */
- mode = 0;
- if ( parse_mode(*(++argv), &mode) == FALSE ) {
- fprintf(stderr, "Unknown mode: %s\n", *argv);
- exit( FALSE);
+ cp = *argv++;
+ while( *cp ) {
+ if (*cp == 's' && strlen(cp) > 3 && *(cp+1) == '/') {
+ char* pos=needle=cp+2;
+ for(;;) {
+ pos = strchr(pos, '/');
+ if (pos==NULL) {
+ fprintf(stderr, "B\n");
+ usage( sed_usage);
+ }
+ if (*(pos-1) == '\\') {
+ pos++;
+ continue;
+ }
+ break;
+ }
+ *pos=0;
+ newNeedle=++pos;
+ for(;;) {
+ pos = strchr(pos, '/');
+ if (pos==NULL) {
+ fprintf(stderr, "C\n");
+ usage( sed_usage);
+ }
+ if (*(pos-1) == '\\') {
+ pos++;
+ continue;
+ }
+ break;
+ }
+ *pos=0;
+ }
+ cp++;
}
+ fprintf(stderr, "replace '%s' with '%s'\n", needle, newNeedle);
+ stopNow=TRUE;
break;
default:
- usage(grep_usage);
+ fprintf(stderr, "D\n");
+ usage(sed_usage);
}
}
- needle = *argv++;
- argc--;
-
+ fprintf(stderr, "argc=%d\n", argc);
while (argc-- > 0) {
name = *argv++;
@@ -115,25 +135,19 @@ extern int sed_main (int argc, char **argv)
perror (name);
continue;
}
+ fprintf(stderr, "filename is '%s'\n", name);
- line = 0;
-
+ haystack = (char*)malloc( 80);
while (fgets (haystack, sizeof (haystack), fp)) {
- line++;
- cp = &haystack[strlen (haystack) - 1];
-
- if (*cp != '\n')
- fprintf (stderr, "%s: Line too long\n", name);
-
- if (find_match(haystack, needle, ignoreCase) == TRUE) {
- if (tellName==TRUE)
- printf ("%s: ", name);
-
- if (tellLine==TRUE)
- printf ("%ld: ", line);
+ foundOne = replace_match(haystack, needle, newNeedle, ignoreCase);
+ if (noprintFlag==TRUE && foundOne==TRUE)
fputs (haystack, stdout);
- }
+ else
+ fputs (haystack, stdout);
+ /* Avoid any mem leaks */
+ free(haystack);
+ haystack = (char*)malloc( BUF_SIZE);
}
if (ferror (fp))