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-rw-r--r--toys/pending/sh.c44
1 files changed, 17 insertions, 27 deletions
diff --git a/toys/pending/sh.c b/toys/pending/sh.c
index 300ad24b..27dda822 100644
--- a/toys/pending/sh.c
+++ b/toys/pending/sh.c
@@ -213,6 +213,13 @@ static void do_prompt(char *prompt)
writeall(2, toybuf, len);
}
+void array_add(char ***list, unsigned count, char *data)
+{
+ if (!(count&31)) *list = xrealloc(*list, sizeof(char *)*(count+33));
+ (*list)[count] = data;
+ (*list)[count+1] = 0;
+}
+
// quote removal, brace, tilde, parameter/variable, $(command),
// $((arithmetic)), split, path
#define NO_PATH (1<<0)
@@ -232,13 +239,11 @@ static void expand_arg(struct sh_arg *arg, char *new, unsigned flags,
{
// char *s = new, quote = 0;
- if (!(arg->c&32)) arg->v = xrealloc(arg->v, sizeof(void *)*(arg->c+33));
-
-/*
// TODO ls -l /proc/$$/fd
// ${ $(( $( $[ $' `
+/*
while (*s) {
if (!quote && !(flags&NO_BRACE) && *s == '{') {
TODO this recurses
@@ -256,8 +261,7 @@ TODO this recurses
}
*/
// literal passthrough
- arg->v[arg->c++] = new;
- arg->v[arg->c] = 0;
+ array_add(&arg->v, arg->c++, new);
/*
char *s = word, *new = 0;
@@ -450,7 +454,6 @@ struct sh_function {
// TODO: try to avoid prototype.
static int parse_line(char *line, struct sh_function *sp);
void free_function(struct sh_function *sp);
-void argxtend(struct sh_arg *arg);
void run_subshell(struct sh_pipeline *sp)
{
@@ -506,9 +509,7 @@ static struct sh_process *expand_redir(struct sh_arg *arg, int envlen, int *urd)
// Argument is /dev/fd/%d with pipe filehandle
dlist_add((void *)&pp->delete, ss = xmprintf("/dev/fd/%d", pipes[dd]));
- argxtend(&pp->arg);
- pp->arg.v[pp->arg.c++] = ss;
- pp->arg.v[pp->arg.c] = 0;
+ array_add(&pp->arg.v, pp->arg.c++, ss);
continue;
}
@@ -732,11 +733,7 @@ if (BUGBUG) { int i; dprintf(255, "envlen=%d arg->c=%d run=", envlen, arg->c); f
env[ll] = sss;
break;
}
- if (ll == kk) {
- if (!(kk&31)) env = xrealloc(env, (33+kk)*sizeof(char *));
- env[kk++] = sss;
- env[kk] = 0;
- }
+ if (ll == kk) array_add(&env, kk, sss);
}
environ = env;
}
@@ -848,12 +845,6 @@ static char *parse_word(char *start)
// if then fi for while until select done done case esac break continue return
-// Allocate more space for arg, and possibly terminator
-void argxtend(struct sh_arg *arg)
-{
- if (!(arg->c&31)) arg->v = xrealloc(arg->v, (33+arg->c)*sizeof(void *));
-}
-
// Free one pipeline segment.
void free_pipeline(void *pipeline)
{
@@ -929,9 +920,9 @@ static int parse_line(char *line, struct sh_function *sp)
}
if (!*s && !*end) {
// Add this line
- argxtend(arg);
- arg->v[arg->c+1] = arg->v[arg->c];
- arg->v[arg->c++] = xstrdup(line);
+ array_add(&arg->v, arg->c++, xstrdup(line));
+ array_add(&arg->v, arg->c, arg->v[arg->c]);
+ arg->c++;
// EOF hit, end HERE document
} else {
arg->v[arg->c] = 0;
@@ -992,13 +983,12 @@ static int parse_line(char *line, struct sh_function *sp)
arg = pl->arg;
dlist_add_nomalloc((void *)&sp->pipeline, (void *)pl);
}
- argxtend(arg);
// Do we need to request another line to finish word (find ending quote)?
if (!end) {
// Save unparsed bit of this line, we'll need to re-parse it.
- arg->v[arg->c] = xstrndup(start, strlen(start));
- arg->c = -(arg->c+1);
+ array_add(&arg->v, arg->c++, xstrndup(start, strlen(start)));
+ arg->c = -arg->c;
free(delete);
return 1;
@@ -1034,7 +1024,7 @@ static int parse_line(char *line, struct sh_function *sp)
}
// Save argument (strdup) and check for flow control
- s = arg->v[arg->c] = xstrndup(start, end-start);
+ array_add(&arg->v, arg->c, s = xstrndup(start, end-start));
start = end;
if (strchr(";|&", *s)) {
// flow control without a statement is an error