refs #29: 'show -t' to print code template.

Signed-off-by: Eric Wang <skygragon@gmail.com>

Author: skygragon

lib/commands/show.js

@@ -31,6 +31,18 @@ var cmd = {
       type:     'boolean',
       default:  false,
       describe: 'Provide extra problem details in generated file'
+    },
+    desc: {
+      alias:    'd',
+      type:     'boolean',
+      default:  true,
+      describe: 'Show problem description'
+    },
+    template: {
+      alias:    't',
+      type:     'boolean',
+      default:  false,
+      describe: 'Show code template'
     }
   }
 };
@@ -39,14 +51,14 @@ cmd.handler = function(argv) {
   core.getProblem(argv.keyword, function(e, problem) {
     if (e) return log.fail(e);
 
-    var msg = '';
+    var template = _.find(problem.templates, function(x) {
+      return x.value === argv.lang;
+    });
+    if (!template && (argv.template || argv.gen))
+      return log.fail('Unknown language "' + argv.lang + '"');
+
+    var fileinfo = '';
     if (argv.gen) {
-      var template = _.find(problem.templates, function(x) {
-        return x.value === argv.lang;
-      });
-      if (!template)
-        return log.fail('Failed to generate source file, ' +
-            'unknown language "' + argv.lang + '"');
       problem.code = template.defaultCode;
 
       // try to use a new filename to avoid overwrite by mistake
@@ -60,24 +72,36 @@ cmd.handler = function(argv) {
       }
 
       core.exportProblem(problem, filename, !argv.extra);
-      msg = sprintf('(File: %s)', chalk.yellow.underline(filename));
+      fileinfo = sprintf('(File: %s)', chalk.yellow.underline(filename));
+    }
+
+    if (argv.desc) {
+      log.info(sprintf('[%d] %s %s\t%s\n',
+            problem.id,
+            problem.name,
+            (problem.starred ? chalk.yellow('★') : ' '),
+            fileinfo));
+      log.info(sprintf('%s\n', chalk.underline(problem.link)));
+      log.info(sprintf('* %s (%.2f%%)', problem.level, problem.percent));
+      log.info(sprintf('* Total Accepted:    %d', problem.totalAC));
+      log.info(sprintf('* Total Submissions: %d', problem.totalSubmit));
+      if (problem.testable && problem.testcase) {
+        log.info(sprintf('* Testcase Example:  %s',
+              chalk.yellow(util.inspect(problem.testcase))));
+      }
+      log.info();
+      log.info(problem.desc);
+
+      if (argv.template) {
+        log.info();
+        log.info('Template:');
+        log.info();
+      }
     }
 
-    log.info(sprintf('[%d] %s %s\t%s\n',
-          problem.id,
-          problem.name,
-          (problem.starred ? chalk.yellow('★') : ' '),
-          msg));
-    log.info(sprintf('%s\n', chalk.underline(problem.link)));
-    log.info(sprintf('* %s (%.2f%%)', problem.level, problem.percent));
-    log.info(sprintf('* Total Accepted:    %d', problem.totalAC));
-    log.info(sprintf('* Total Submissions: %d', problem.totalSubmit));
-    if (problem.testable && problem.testcase) {
-      log.info(sprintf('* Testcase Example:  %s',
-            chalk.yellow(util.inspect(problem.testcase))));
+    if (argv.template) {
+      log.info(chalk.yellow(template.defaultCode));
     }
-    log.info();
-    log.info(problem.desc);
   });
 };