strvec: rename files from argv-array to strvec

This requires updating #include lines across the code-base, but that's
all fairly mechanical, and was done with:

  git ls-files '*.c' '*.h' |
  xargs perl -i -pe 's/argv-array.h/strvec.h/'

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 109 insertions, 0 deletions

diff --git a/strvec.c b/strvec.c
new file mode 100644
index 0000000000..9e76ab9295
--- /dev/null
+++ b/strvec.c
@@ -0,0 +1,109 @@
+#include "cache.h"
+#include "strvec.h"
+#include "strbuf.h"
+
+const char *empty_strvec[] = { NULL };
+
+void strvec_init(struct strvec *array)
+{
+	array->argv = empty_strvec;
+	array->argc = 0;
+	array->alloc = 0;
+}
+
+static void strvec_push_nodup(struct strvec *array, const char *value)
+{
+	if (array->argv == empty_strvec)
+		array->argv = NULL;
+
+	ALLOC_GROW(array->argv, array->argc + 2, array->alloc);
+	array->argv[array->argc++] = value;
+	array->argv[array->argc] = NULL;
+}
+
+const char *strvec_push(struct strvec *array, const char *value)
+{
+	strvec_push_nodup(array, xstrdup(value));
+	return array->argv[array->argc - 1];
+}
+
+const char *strvec_pushf(struct strvec *array, const char *fmt, ...)
+{
+	va_list ap;
+	struct strbuf v = STRBUF_INIT;
+
+	va_start(ap, fmt);
+	strbuf_vaddf(&v, fmt, ap);
+	va_end(ap);
+
+	strvec_push_nodup(array, strbuf_detach(&v, NULL));
+	return array->argv[array->argc - 1];
+}
+
+void strvec_pushl(struct strvec *array, ...)
+{
+	va_list ap;
+	const char *arg;
+
+	va_start(ap, array);
+	while ((arg = va_arg(ap, const char *)))
+		strvec_push(array, arg);
+	va_end(ap);
+}
+
+void strvec_pushv(struct strvec *array, const char **argv)
+{
+	for (; *argv; argv++)
+		strvec_push(array, *argv);
+}
+
+void strvec_pop(struct strvec *array)
+{
+	if (!array->argc)
+		return;
+	free((char *)array->argv[array->argc - 1]);
+	array->argv[array->argc - 1] = NULL;
+	array->argc--;
+}
+
+void strvec_split(struct strvec *array, const char *to_split)
+{
+	while (isspace(*to_split))
+		to_split++;
+	for (;;) {
+		const char *p = to_split;
+
+		if (!*p)
+			break;
+
+		while (*p && !isspace(*p))
+			p++;
+		strvec_push_nodup(array, xstrndup(to_split, p - to_split));
+
+		while (isspace(*p))
+			p++;
+		to_split = p;
+	}
+}
+
+void strvec_clear(struct strvec *array)
+{
+	if (array->argv != empty_strvec) {
+		int i;
+		for (i = 0; i < array->argc; i++)
+			free((char *)array->argv[i]);
+		free(array->argv);
+	}
+	strvec_init(array);
+}
+
+const char **strvec_detach(struct strvec *array)
+{
+	if (array->argv == empty_strvec)
+		return xcalloc(1, sizeof(const char *));
+	else {
+		const char **ret = array->argv;
+		strvec_init(array);
+		return ret;
+	}
+}