f66d1423f5
Using the show_usage_and_exit_if_asked() helper we introduced earlier, fix callers of usage() that want to show the help text when explicitly asked by the end-user. The help text now goes to the standard output stream for them. These are the bog standard "if we got only '-h', then that is a request for help" callers. Their if (argc == 2 && !strcmp(argv[1], "-h")) usage(message); are simply replaced with show_usage_and_exit_if_asked(argc, argv, message); With this, the built-ins tested by t0012 all send their help text to their standard output stream, so the check in t0012 that was half tightened earlier is now fully tightened to insist on standard error stream being empty. Acked-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
89 lines
2.0 KiB
C
89 lines
2.0 KiB
C
#include "builtin.h"
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#include "transport.h"
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static const char usage_msg[] =
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"git remote-fd <remote> <url>";
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/*
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* URL syntax:
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* 'fd::<inoutfd>[/<anything>]' Read/write socket pair
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* <inoutfd>.
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* 'fd::<infd>,<outfd>[/<anything>]' Read pipe <infd> and write
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* pipe <outfd>.
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* [foo] indicates 'foo' is optional. <anything> is any string.
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*
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* The data output to <outfd>/<inoutfd> should be passed unmolested to
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* git-receive-pack/git-upload-pack/git-upload-archive and output of
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* git-receive-pack/git-upload-pack/git-upload-archive should be passed
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* unmolested to <infd>/<inoutfd>.
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*
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*/
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#define MAXCOMMAND 4096
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static void command_loop(int input_fd, int output_fd)
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{
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char buffer[MAXCOMMAND];
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while (1) {
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size_t i;
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if (!fgets(buffer, MAXCOMMAND - 1, stdin)) {
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if (ferror(stdin))
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die("Input error");
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return;
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}
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/* Strip end of line characters. */
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i = strlen(buffer);
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while (i > 0 && isspace(buffer[i - 1]))
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buffer[--i] = 0;
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if (!strcmp(buffer, "capabilities")) {
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printf("*connect\n\n");
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fflush(stdout);
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} else if (starts_with(buffer, "connect ")) {
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printf("\n");
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fflush(stdout);
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if (bidirectional_transfer_loop(input_fd,
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output_fd))
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die("Copying data between file descriptors failed");
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return;
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} else {
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die("Bad command: %s", buffer);
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}
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}
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}
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int cmd_remote_fd(int argc,
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const char **argv,
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const char *prefix,
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struct repository *repo UNUSED)
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{
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int input_fd = -1;
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int output_fd = -1;
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char *end;
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BUG_ON_NON_EMPTY_PREFIX(prefix);
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show_usage_if_asked(argc, argv, usage_msg);
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if (argc != 3)
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usage(usage_msg);
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input_fd = (int)strtoul(argv[2], &end, 10);
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if ((end == argv[2]) || (*end != ',' && *end != '/' && *end))
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die("Bad URL syntax");
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if (*end == '/' || !*end) {
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output_fd = input_fd;
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} else {
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char *end2;
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output_fd = (int)strtoul(end + 1, &end2, 10);
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if ((end2 == end + 1) || (*end2 != '/' && *end2))
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die("Bad URL syntax");
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}
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command_loop(input_fd, output_fd);
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return 0;
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}
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