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vm_dump.c: highlight preface

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* vm_dump.c (preface_dump): highlight very important but very
  ofhen ignored message like a Xmas tree.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50472 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-05-12 06:50:05 +00:00
parent 92430a031d
commit 218617161f
1 changed files with 22 additions and 1 deletions
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23
vm_dump.c
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@ -950,8 +950,29 @@ preface_dump(void)
" * /Library/Logs/DiagnosticReports\n"
" for more details.\n"
"\n";
const char *const endmsg = msg + sizeof(msg) - 1;
const char *p = msg;
#define RED "\033[;31;1;7m"
#define GREEN "\033[;32;7m"
#define RESET "\033[m"
fputs(msg, stderr);
if (isatty(fileno(stderr))) {
const char *e = strchr(p, '\n');
const int w = (int)(e - p);
fputs(RED, stderr);
fwrite(p, 1, w, stderr);
fputs(RESET, stderr);
fputc('\n', stderr);
while ((p = e + 1) < endmsg && (e = strchr(p, '\n')) != 0 && e > p + 1) {
int i = (int)(e - p);
fputs(GREEN, stderr);
fwrite(p, 1, e - p, stderr);
for (; i < w; ++i) fputc(' ', stderr);
fputs(RESET, stderr);
fputc('\n', stderr);
}
}
fwrite(p, 1, endmsg - p, stderr);
#endif
}