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* editors/sed.c (parse_edit_cmd): Rewrite.

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* testsuite/sed/sed-splits-edit-commands-on-command-line: New.
This commit is contained in:
Matt Kraai 2002-01-03 21:12:34 +00:00
parent d299563257
commit 5ed78adca5
2 changed files with 22 additions and 34 deletions
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47
editors/sed.c
View File

@ -3,6 +3,7 @@
* *
* Copyright (C) 1999,2000,2001 by Lineo, inc. and Mark Whitley * Copyright (C) 1999,2000,2001 by Lineo, inc. and Mark Whitley
* Copyright (C) 1999,2000,2001 by Mark Whitley <markw@codepoet.org> * Copyright (C) 1999,2000,2001 by Mark Whitley <markw@codepoet.org>
* Copyright (C) 2002 Matt Kraai
* *
* This program is free software; you can redistribute it and/or modify * 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 * it under the terms of the GNU General Public License as published by
@ -296,9 +297,7 @@ static void move_back(char *str, int offset)
static int parse_edit_cmd(struct sed_cmd *sed_cmd, const char *editstr) static int parse_edit_cmd(struct sed_cmd *sed_cmd, const char *editstr)
{ {
int idx = 0; int i, j;
int slashes_eaten = 0;
char *ptr; /* shorthand */
/* /*
* the string that gets passed to this function should look like this: * the string that gets passed to this function should look like this:
@ -326,44 +325,24 @@ static int parse_edit_cmd(struct sed_cmd *sed_cmd, const char *editstr)
error_msg_and_die("bad format in edit expression"); error_msg_and_die("bad format in edit expression");
/* store the edit line text */ /* store the edit line text */
/* make editline big enough to accomodate the extra '\n' we will tack on
* to the end */
sed_cmd->editline = xmalloc(strlen(&editstr[3]) + 2); sed_cmd->editline = xmalloc(strlen(&editstr[3]) + 2);
strcpy(sed_cmd->editline, &editstr[3]); for (i = 3, j = 0; editstr[i] != '\0' && strchr("\r\n", editstr[i]) == NULL;
ptr = sed_cmd->editline; i++, j++) {
if (editstr[i] == '\\' && strchr("\n\r", editstr[i+1]) != NULL) {
/* now we need to go through * and: s/\\[\r\n]$/\n/g on the edit line */ sed_cmd->editline[j] = '\n';
while (ptr[idx]) { i++;
while (ptr[idx] != '\\' || (ptr[idx+1] != '\n' && ptr[idx+1] != '\r')) { } else
idx++; sed_cmd->editline[j] = editstr[i];
if (!ptr[idx]) {
goto out;
}
}
/* move the newline over the '\' before it (effectively eats the '\') */
move_back(&ptr[idx], 1);
slashes_eaten++;
/* substitue \r for \n if needed */
if (ptr[idx] == '\r')
ptr[idx] = '\n';
} }
out:
/* figure out if we need to add a newline */ /* figure out if we need to add a newline */
if (ptr[idx-1] != '\n') { if (sed_cmd->editline[j-1] != '\n')
ptr[idx] = '\n'; sed_cmd->editline[j++] = '\n';
idx++;
}
/* terminate string */ /* terminate string */
ptr[idx]= 0; sed_cmd->editline[j] = '\0';
/* this accounts for discrepancies between the modified string and the return i;
* original string passed in to this function */
/* adjust for opening 2 chars [aic]\ */
return idx + slashes_eaten + 2;
} }

9
testsuite/sed/sed-splits-edit-commands-on-command-line Normal file
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@ -0,0 +1,9 @@
echo 2 | busybox sed -e 'i\
1
a\
3' > output
cmp output - <<EOF
1
2
3
EOF