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Initial import of the tags.r2.js script (CTAGS support) ##r2js
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var tagsRegisterPlugin = (function () { | ||
var tags = {}; | ||
function loadTagsFile(tagsFile) { | ||
const lines = r2.cmd("cat " + tagsFile).split(/\n/g);; | ||
for (let line of lines) { | ||
const cols = line.split(/\t/g); | ||
tags[cols[0]] = { | ||
file: cols[1], | ||
expr: cols[2], | ||
} | ||
} | ||
} | ||
function catFunction(name) { | ||
const found = tags[name]; | ||
if (found) { | ||
console.log(JSON.stringify(tags[name], null, 2)); | ||
const par = found.expr.indexOf("("); | ||
if (par != -1) { | ||
found.expr = found.expr.substr(0, par- 1); | ||
} | ||
const res = r2.cmd("cat " + found.file); | ||
const beg = new RegExp (found.expr.substr(2)); | ||
const end = new RegExp (/\n}/); | ||
const fileData = r2.cmd("cat " + found.file); | ||
if (fileData && fileData.length > 0) { | ||
const index = fileData.search(beg); | ||
if (index >= 0) { | ||
const functionData = fileData.substr(index); | ||
const elfin = functionData.search(end); | ||
if (elfin != -1) { | ||
r2.log(functionData.substr(0, elfin + 2)); | ||
return true; | ||
} | ||
} else { | ||
console.log("Cannot find pattern: "+ beg); | ||
} | ||
} else { | ||
console.log("Cannot open " + found.file); | ||
} | ||
} | ||
return false; | ||
} | ||
function tagsCommand(cmd) { | ||
const args = cmd.substr(4).trim(); | ||
if (args.startsWith("-f")) { | ||
loadTagsFile(args.substr(2).trim()); | ||
} else if (args.startsWith("-h")) { | ||
console.log("Usage: tags [args]"); | ||
console.log(" tags -f ./tags - load tags in memory"); | ||
console.log(" tags main - show function contents from file"); | ||
console.log(" tags - show function in current offset"); | ||
} else if (args === "") { | ||
let functionName = r2.cmd("isqq.").trim(); | ||
if (functionName === "") { | ||
functionName = r2.cmd("fd").trim(); | ||
if (functionName) { | ||
const space = functionName.indexOf(" "); | ||
if (space != -1) { | ||
functionName = functionName.substr(0, space); | ||
} | ||
} | ||
} | ||
if (functionName.startsWith("_")) { | ||
if (!catFunction(functionName)) { | ||
catFunction(functionName.substr(1)); | ||
} | ||
} else { | ||
catFunction(functionName); | ||
} | ||
} else if (args.startsWith("-d")) { | ||
const dir = args.substr(2).trim(); | ||
r2.cmd("cd " + dir); | ||
} else { | ||
catFunction(args); | ||
} | ||
} | ||
function main() { | ||
r2.unload('core', 'tags'); | ||
r2.plugin('core', function () { | ||
function coreCall (cmd) { | ||
if (cmd.startsWith('tags')) { | ||
try { | ||
tagsCommand(cmd); | ||
} catch (e) { | ||
console.error(e); | ||
} | ||
return true; | ||
} | ||
return false; | ||
} | ||
return { | ||
name: 'tags', | ||
license: 'MIT', | ||
desc: 'read function from ctags', | ||
call: coreCall | ||
}; | ||
}); | ||
} | ||
return main; | ||
})(); | ||
tagsRegisterPlugin(); |