From 4dbdc42d9e7c3968ff7f690d00680419c9b8cb0f Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Tue, 9 Apr 2024 15:34:27 +0200
Subject: Adding upstream version 1:2.43.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 alias.c | 135 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100644 alias.c

(limited to 'alias.c')

diff --git a/alias.c b/alias.c
new file mode 100644
index 0000000..5a238f2
--- /dev/null
+++ b/alias.c
@@ -0,0 +1,135 @@
+#include "git-compat-util.h"
+#include "alias.h"
+#include "config.h"
+#include "gettext.h"
+#include "strbuf.h"
+#include "string-list.h"
+
+struct config_alias_data {
+	const char *alias;
+	char *v;
+	struct string_list *list;
+};
+
+static int config_alias_cb(const char *key, const char *value,
+			   const struct config_context *ctx UNUSED, void *d)
+{
+	struct config_alias_data *data = d;
+	const char *p;
+
+	if (!skip_prefix(key, "alias.", &p))
+		return 0;
+
+	if (data->alias) {
+		if (!strcasecmp(p, data->alias))
+			return git_config_string((const char **)&data->v,
+						 key, value);
+	} else if (data->list) {
+		string_list_append(data->list, p);
+	}
+
+	return 0;
+}
+
+char *alias_lookup(const char *alias)
+{
+	struct config_alias_data data = { alias, NULL };
+
+	read_early_config(config_alias_cb, &data);
+
+	return data.v;
+}
+
+void list_aliases(struct string_list *list)
+{
+	struct config_alias_data data = { NULL, NULL, list };
+
+	read_early_config(config_alias_cb, &data);
+}
+
+void quote_cmdline(struct strbuf *buf, const char **argv)
+{
+	for (const char **argp = argv; *argp; argp++) {
+		if (argp != argv)
+			strbuf_addch(buf, ' ');
+		strbuf_addch(buf, '"');
+		for (const char *p = *argp; *p; p++) {
+			const char c = *p;
+
+			if (c == '"' || c =='\\')
+				strbuf_addch(buf, '\\');
+			strbuf_addch(buf, c);
+		}
+		strbuf_addch(buf, '"');
+	}
+}
+
+#define SPLIT_CMDLINE_BAD_ENDING 1
+#define SPLIT_CMDLINE_UNCLOSED_QUOTE 2
+#define SPLIT_CMDLINE_ARGC_OVERFLOW 3
+static const char *split_cmdline_errors[] = {
+	N_("cmdline ends with \\"),
+	N_("unclosed quote"),
+	N_("too many arguments"),
+};
+
+int split_cmdline(char *cmdline, const char ***argv)
+{
+	size_t src, dst, count = 0, size = 16;
+	char quoted = 0;
+
+	ALLOC_ARRAY(*argv, size);
+
+	/* split alias_string */
+	(*argv)[count++] = cmdline;
+	for (src = dst = 0; cmdline[src];) {
+		char c = cmdline[src];
+		if (!quoted && isspace(c)) {
+			cmdline[dst++] = 0;
+			while (cmdline[++src]
+					&& isspace(cmdline[src]))
+				; /* skip */
+			ALLOC_GROW(*argv, count + 1, size);
+			(*argv)[count++] = cmdline + dst;
+		} else if (!quoted && (c == '\'' || c == '"')) {
+			quoted = c;
+			src++;
+		} else if (c == quoted) {
+			quoted = 0;
+			src++;
+		} else {
+			if (c == '\\' && quoted != '\'') {
+				src++;
+				c = cmdline[src];
+				if (!c) {
+					FREE_AND_NULL(*argv);
+					return -SPLIT_CMDLINE_BAD_ENDING;
+				}
+			}
+			cmdline[dst++] = c;
+			src++;
+		}
+	}
+
+	cmdline[dst] = 0;
+
+	if (quoted) {
+		FREE_AND_NULL(*argv);
+		return -SPLIT_CMDLINE_UNCLOSED_QUOTE;
+	}
+
+	if (count >= INT_MAX) {
+		FREE_AND_NULL(*argv);
+		return -SPLIT_CMDLINE_ARGC_OVERFLOW;
+	}
+
+	ALLOC_GROW(*argv, count + 1, size);
+	(*argv)[count] = NULL;
+
+	return count;
+}
+
+const char *split_cmdline_strerror(int split_cmdline_errno)
+{
+	return split_cmdline_errors[-split_cmdline_errno - 1];
+}
-- 
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