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Revision 3306f6524d32e90d2e71648fea7c6e156250f903 authored by Johannes Schindelin on 06 January 2018, 22:01:22 UTC, committed by Junio C Hamano on 10 January 2018, 22:00:54 UTC 
mingw: handle GITPERLLIB in t0021 in a Windows-compatible way
 
Git's assumption that all path lists are colon-separated is not only
wrong on Windows, it is not even an assumption that is compatible with
POSIX.

In the interest of time, let's not try to fix this properly but simply
work around the obvious breakage on Windows, where the MSYS2 Bash used
by Git for Windows to interpret the Git's Unix shell scripts will
automagically convert path lists in the environment to
semicolon-separated lists of Windows paths (with drive letter and the
corresponding colon and all that jazz).

In other words, we simply look whether there is a semicolon in
GITPERLLIB and split by semicolons if found instead of colons. This is
not fool-proof, of course, as the path list could consist of a single
path. But that is not the case in Git for Windows' test suite, there are
always two paths in GITPERLLIB.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent 36438dc
Raw File
url.c 
#include "cache.h"
#include "url.h"

int is_urlschemechar(int first_flag, int ch)
{
	/*
	 * The set of valid URL schemes, as per STD66 (RFC3986) is
	 * '[A-Za-z][A-Za-z0-9+.-]*'. But use sightly looser check
	 * of '[A-Za-z0-9][A-Za-z0-9+.-]*' because earlier version
	 * of check used '[A-Za-z0-9]+' so not to break any remote
	 * helpers.
	 */
	int alphanumeric, special;
	alphanumeric = ch > 0 && isalnum(ch);
	special = ch == '+' || ch == '-' || ch == '.';
	return alphanumeric || (!first_flag && special);
}

int is_url(const char *url)
{
	/* Is "scheme" part reasonable? */
	if (!url || !is_urlschemechar(1, *url++))
		return 0;
	while (*url && *url != ':') {
		if (!is_urlschemechar(0, *url++))
			return 0;
	}
	/* We've seen "scheme"; we want colon-slash-slash */
	return (url[0] == ':' && url[1] == '/' && url[2] == '/');
}

static char *url_decode_internal(const char **query, int len,
				 const char *stop_at, struct strbuf *out,
				 int decode_plus)
{
	const char *q = *query;

	while (len) {
		unsigned char c = *q;

		if (!c)
			break;
		if (stop_at && strchr(stop_at, c)) {
			q++;
			len--;
			break;
		}

		if (c == '%') {
			int val = hex2chr(q + 1);
			if (0 <= val) {
				strbuf_addch(out, val);
				q += 3;
				len -= 3;
				continue;
			}
		}

		if (decode_plus && c == '+')
			strbuf_addch(out, ' ');
		else
			strbuf_addch(out, c);
		q++;
		len--;
	}
	*query = q;
	return strbuf_detach(out, NULL);
}

char *url_decode(const char *url)
{
	return url_decode_mem(url, strlen(url));
}

char *url_decode_mem(const char *url, int len)
{
	struct strbuf out = STRBUF_INIT;
	const char *colon = memchr(url, ':', len);

	/* Skip protocol part if present */
	if (colon && url < colon) {
		strbuf_add(&out, url, colon - url);
		len -= colon - url;
		url = colon;
	}
	return url_decode_internal(&url, len, NULL, &out, 0);
}

char *url_decode_parameter_name(const char **query)
{
	struct strbuf out = STRBUF_INIT;
	return url_decode_internal(query, -1, "&=", &out, 1);
}

char *url_decode_parameter_value(const char **query)
{
	struct strbuf out = STRBUF_INIT;
	return url_decode_internal(query, -1, "&", &out, 1);
}

void end_url_with_slash(struct strbuf *buf, const char *url)
{
	strbuf_addstr(buf, url);
	strbuf_complete(buf, '/');
}

void str_end_url_with_slash(const char *url, char **dest) {
	struct strbuf buf = STRBUF_INIT;
	end_url_with_slash(&buf, url);
	free(*dest);
	*dest = strbuf_detach(&buf, NULL);
}
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