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#!/usr/bin/env -S qjs --std
/* adds clickable links to commit hashes + a clickable UI to git switch
* usage:
* 0. install QuickJS (https://bellard.org/quickjs)
* 1. put this script in your CGI directory
* 2. chmod +x /your/cgi-bin/directory/git.cgi
* 3. ln -s /your/cgi-bin/directory/git.cgi /usr/local/bin/gitcha
* 4. run `gitcha log' or `gitcha switch'
* other params work too, but for those it's more convenient to use git.
* (if you have ansi2html, it also works with w3m. just set GITCHA_CHA=w3m) */
const gitcha = std.getenv("GITCHA_GITCHA") ?? "gitcha";
if (scriptArgs[0].split('/').pop() == gitcha) {
const cha = std.getenv("GITCHA_CHA") ?? 'cha';
const params = encodeURIComponent(scriptArgs.slice(1)
.map(x => encodeURIComponent(x)).join(' '));
const [path, _] = os.getcwd();
const prefix = cha == "w3m" ? '/cgi-bin/' : "cgi-bin:";
os.exec([cha, `${prefix}git.cgi?params=${params}&path=${path}&prefix=${prefix}`]);
std.exit(0);
}
const query = {};
for (const p of std.getenv("QUERY_STRING").split('&')) {
const sp = p.split('=');
query[decodeURIComponent(sp[0])] = decodeURIComponent(sp[1] ?? '');
}
function startGitCmd(config, params) {
const titleParams = params.join(' ').replace(/[&<>]/g,
x => ({'&': '&', '<': '<', '>': '>'}[x]));
std.out.puts(`Content-Type: text/html
<!DOCTYPE html>
<title>git ${titleParams}</title>`);
std.out.flush();
const [read_fd, write_fd] = os.pipe();
const [read_fd2, write_fd2] = os.pipe();
os.exec(["git", ...config, ...params], {
stdout: write_fd,
block: false
});
os.close(write_fd);
const libexecDir = std.getenv("CHA_LIBEXEC_DIR") ??
'/usr/local/libexec/chawan';
os.exec([libexecDir + "/ansi2html"], {
stdin: read_fd,
stdout: write_fd2,
block: false
});
os.close(read_fd);
os.close(write_fd2);
return std.fdopen(read_fd2, "r");
}
os.chdir(query.path);
const config = ["-c", "color.ui=always", "-c", "log.decorate=short"];
const params = query.params ? decodeURIComponent(query.params).split(' ')
.map(x => decodeURIComponent(x)) : [];
if (params[0] == "log") {
const f = startGitCmd(config, params);
const cgi = `${query.prefix}git.cgi?prefix=${query.prefix}&path=${query.path}¶ms=show`;
while ((l = f.getline()) !== null) {
console.log(l.replace(/[a-f0-9]{40}/g,
x => `<a href='${cgi}%20${x}'>${x}</a>`));
}
f.close();
} else if (params[0] == "switch" && params.length == 1) {
const f = startGitCmd(config, ["branch"]);
const cgi = `${query.prefix}git.cgi?prefix=${query.prefix}&path=${query.path}¶ms=switch`;
const cgi2 = `${query.prefix}git.cgi?prefix=${query.prefix}&path=${query.path}¶ms=log`;
while ((l = f.getline()) !== null) {
console.log(l.replace(/^(\s+)([\w.-]+)$/g,
(_, ws, name) => `${ws}<a href='${cgi}%20${name}'>${name}</a> ` +
`(<a href='${cgi2}%20${name}'>view</a>)`));
}
f.close();
} else {
std.out.puts("Content-Type: text/x-ansi\n\n");
std.out.flush();
const pid = os.exec(["git", ...config, ...params], {
block: false,
stderr: 1
});
os.waitpid(pid, 0);
}
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