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authorRob Landley <rob@landley.net>2013-02-24 13:48:15 -0600
committerRob Landley <rob@landley.net>2013-02-24 13:48:15 -0600
commitcc99be215388cc3ffce0d8edc552cb344259b45c (patch)
tree71cf774feea6b3743b5a257b9ded485df6773906 /toys/pending/sed.c
parent53832006245010487d8d12599ce011d67bf19f94 (diff)
downloadtoybox-cc99be215388cc3ffce0d8edc552cb344259b45c.tar.gz
Sed's still just a stub, but clean it up enough so it at least compiles.
Diffstat (limited to 'toys/pending/sed.c')
-rw-r--r--toys/pending/sed.c89
1 files changed, 48 insertions, 41 deletions
diff --git a/toys/pending/sed.c b/toys/pending/sed.c
index 15099cc6..0ce25aca 100644
--- a/toys/pending/sed.c
+++ b/toys/pending/sed.c
@@ -4,7 +4,7 @@
*
* See http://opengroup.org/onlinepubs/9699919799/utilities/sed.c
-USE_SED(NEWTOY(sed, "irne*", TOYFLAG_BIN))
+USE_SED(NEWTOY(sed, "irne*f*", TOYFLAG_BIN))
config SED
bool "sed"
@@ -26,10 +26,10 @@ config SED
#include "lib/xregcomp.h"
GLOBALS(
+ struct arg_list *files;
struct arg_list *scripts;
- struct double_list *commands;
- void *parsed;
+ void *commands;
)
// Digested version of what sed commands can actually tell use to do.
@@ -42,7 +42,7 @@ struct sed_command {
// data string for (saicytb)
char c, *data;
// Regexes for s/match/data/ and /begin/,/end/command
- regex_t *match, *begin, *end;
+ regex_t *rmatch, *rbegin, *rend;
// For numeric ranges ala 10,20command
long lstart, lstop;
// Which match to replace, 0 for all. s and w commands can write to a file
@@ -50,22 +50,26 @@ struct sed_command {
};
// Space. Space. Gotta get past space. Spaaaaaaaace! (But not newline.)
-void spaceorb(char **s)
+static void spaceorb(char **s)
{
- while (**s == ' ' || **s == '\t') *s++;
+ while (**s == ' ' || **s == '\t') ++*s;
}
-void parse_scripts(void)
+// Parse sed commands
+
+static void parse_scripts(void)
{
- struct sed_command *commands = 0;
struct arg_list *script;
- int which = 0;
- long l;
+ int which = 0, i;
+
+ // Loop through list of scripts collated from command line and/or files
- for (script = TT.scripts; *script; script = script->next) {
- char *str = script->arg, *s;
+ for (script = TT.scripts; script; script = script->next) {
+ char *str = script->arg;
struct sed_command *cmd;
+ // we can get multiple commands from a string (semicolons and such)
+
which++;
for (i=1;;) {
if (!*str) break;
@@ -74,33 +78,41 @@ void parse_scripts(void)
// Identify prefix
for (;;) {
- long l;
-
spaceorb(&str);
- if (*str == '$') {
- l = -1;
+ if (*str == '^') {
+ if (cmd->lstart) goto parse_fail;
+ cmd->lstart = -1;
+ str++;
+ continue;
+ } else if (*str == '$') {
+ cmd->lstop = LONG_MAX;
str++;
- } else if (isdigit(*str)) l = strtol(str, &str, 10);
- else if (!cmd->lstart) break;
- else goto parse_fail;
+ break;
+ } else if (isdigit(*str)) {
+ long ll = strtol(str, &str, 10);
+
+ if (ll<0) goto parse_fail;
+ if (cmd->lstart) {
+ cmd->lstop = ll;
+ break;
+ } else cmd->lstart = ll;
+ } else if (*str == '/' || *str == '\\') {
+ // set begin/end
+ printf("regex\n");
+ exit(1);
+ } else if (!cmd->lstart && !cmd->rbegin) break;
+ else goto parse_fail; // , with no range after it
spaceorb(&str);
- if (!cmd->lstart) {
- if (!l) goto parse_fail;
- cmd->lstart = l;
- if (*str != ',') break;
- str++;
- continue;
- }
- cmd->lstop = l;
- break;
- } else if (*str == '/') {
- printf("regex\n");
+ if (*str != ',') break;
+ str++;
}
- l = stridx("{bcdDgGhHlnNpPstwxyrqia= \t#:}", *str);
- if (l == -1) goto parse_fail;
-
+ i = stridx("{bcdDgGhHlnNpPstwxyrqia= \t#:}", *str);
+ if (i == -1) goto parse_fail;
+ dlist_add_nomalloc((struct double_list **)&TT.commands,
+ (struct double_list *)cmd);
+ exit(1);
}
}
@@ -117,15 +129,10 @@ void sed_main(void)
// If no -e, use first argument
if (!TT.scripts) {
if (!*files) error_exit("Need script");
- (TT.scripts=xzalloc(sizeof(struct arg_list)))->arg=*(files++);
+ (TT.scripts = xzalloc(sizeof(struct arg_list)))->arg = *(files++);
}
+ parse_scripts();
- {
- struct arg_list *test;
-
- for (test = TT.commands; test; test = test->next)
- dprintf(2,"command=%s\n",test->arg);
- while (*files) dprintf(2,"file=%s\n", *(files++));
- }
+ while (*files) dprintf(2,"file=%s\n", *(files++));
}