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e987df5fe6
Allow combining filters such that only objects accepted by all filters are shown. The motivation for this is to allow getting directory listings without also fetching blobs. This can be done by combining blob:none with tree:<depth>. There are massive repositories that have larger-than-expected trees - even if you include only a single commit. A combined filter supports any number of subfilters, and is written in the following form: combine:<filter 1>+<filter 2>+<filter 3> Certain non-alphanumeric characters in each filter must be URL-encoded. For now, combined filters must be specified in this form. In a subsequent commit, rev-list will support multiple --filter arguments which will have the same effect as specifying one filter argument starting with "combine:". The documentation will be updated in that commit, as the URL-encoding scheme is in general not meant to be used directly by the user, and it is better to describe the URL-encoding feature in terms of the repeated flag. Helped-by: Emily Shaffer <emilyshaffer@google.com> Helped-by: Jeff Hostetler <git@jeffhostetler.com> Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Helped-by: Jonathan Tan <jonathantanmy@google.com> Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Matthew DeVore <matvore@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
120 lines
2.5 KiB
C
120 lines
2.5 KiB
C
#include "cache.h"
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#include "url.h"
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int is_urlschemechar(int first_flag, int ch)
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{
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/*
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* The set of valid URL schemes, as per STD66 (RFC3986) is
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* '[A-Za-z][A-Za-z0-9+.-]*'. But use sightly looser check
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* of '[A-Za-z0-9][A-Za-z0-9+.-]*' because earlier version
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* of check used '[A-Za-z0-9]+' so not to break any remote
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* helpers.
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*/
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int alphanumeric, special;
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alphanumeric = ch > 0 && isalnum(ch);
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special = ch == '+' || ch == '-' || ch == '.';
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return alphanumeric || (!first_flag && special);
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}
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int is_url(const char *url)
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{
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/* Is "scheme" part reasonable? */
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if (!url || !is_urlschemechar(1, *url++))
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return 0;
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while (*url && *url != ':') {
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if (!is_urlschemechar(0, *url++))
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return 0;
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}
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/* We've seen "scheme"; we want colon-slash-slash */
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return (url[0] == ':' && url[1] == '/' && url[2] == '/');
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}
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static char *url_decode_internal(const char **query, int len,
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const char *stop_at, struct strbuf *out,
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int decode_plus)
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{
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const char *q = *query;
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while (len) {
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unsigned char c = *q;
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if (!c)
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break;
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if (stop_at && strchr(stop_at, c)) {
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q++;
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len--;
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break;
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}
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if (c == '%' && (len < 0 || len >= 3)) {
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int val = hex2chr(q + 1);
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if (0 < val) {
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strbuf_addch(out, val);
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q += 3;
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len -= 3;
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continue;
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}
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}
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if (decode_plus && c == '+')
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strbuf_addch(out, ' ');
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else
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strbuf_addch(out, c);
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q++;
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len--;
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}
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*query = q;
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return strbuf_detach(out, NULL);
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}
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char *url_decode(const char *url)
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{
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return url_decode_mem(url, strlen(url));
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}
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char *url_decode_mem(const char *url, int len)
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{
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struct strbuf out = STRBUF_INIT;
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const char *colon = memchr(url, ':', len);
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/* Skip protocol part if present */
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if (colon && url < colon) {
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strbuf_add(&out, url, colon - url);
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len -= colon - url;
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url = colon;
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}
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return url_decode_internal(&url, len, NULL, &out, 0);
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}
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char *url_percent_decode(const char *encoded)
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{
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struct strbuf out = STRBUF_INIT;
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return url_decode_internal(&encoded, strlen(encoded), NULL, &out, 0);
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}
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char *url_decode_parameter_name(const char **query)
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{
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struct strbuf out = STRBUF_INIT;
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return url_decode_internal(query, -1, "&=", &out, 1);
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}
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char *url_decode_parameter_value(const char **query)
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{
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struct strbuf out = STRBUF_INIT;
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return url_decode_internal(query, -1, "&", &out, 1);
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}
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void end_url_with_slash(struct strbuf *buf, const char *url)
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{
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strbuf_addstr(buf, url);
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strbuf_complete(buf, '/');
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}
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void str_end_url_with_slash(const char *url, char **dest)
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{
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struct strbuf buf = STRBUF_INIT;
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end_url_with_slash(&buf, url);
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free(*dest);
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*dest = strbuf_detach(&buf, NULL);
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}
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