From 8ce66856f9e946a08593002672aa017a6e883e54 Mon Sep 17 00:00:00 2001 From: "B. Watson" Date: Mon, 16 Dec 2024 16:39:21 -0500 Subject: do not allow negative -l limit. --- uxd.1 | 4 +++- uxd.c | 7 ++++++- uxd.rst | 4 +++- 3 files changed, 12 insertions(+), 3 deletions(-) diff --git a/uxd.1 b/uxd.1 index d6868f3..d4c1cc9 100644 --- a/uxd.1 +++ b/uxd.1 @@ -109,7 +109,9 @@ bad sequences. .BI \-l \ length Stop dumping after \fIlength\fP bytes (not characters). If the limit is reached in the middle of a multibyte character, the entire character -will be dumped. +will be dumped. Can be given in decimal, hex (with \fI0x\fP prefix), or +octal (with \fI0\fP prefix). Negative \fIlength\fP doesn\(aqt make sense, and +is an error. .UNINDENT .\" stop dumping after bytes (not characters). . diff --git a/uxd.c b/uxd.c index 95a91bd..6ea3897 100644 --- a/uxd.c +++ b/uxd.c @@ -230,7 +230,12 @@ void parse_args(int argc, char **argv) { case 'b': bold = 1; break; case 'l': - limit = parse_number(opt, optarg); break; + limit = parse_number(opt, optarg); + if(limit < 0) { + fprintf(stderr, "%s: negative limit for -l not allowed.\n", self); + exit(1); + } + break; case 'r': hilite_multi = 1; break; case 'm': diff --git a/uxd.rst b/uxd.rst index a17eb1c..a6c90fd 100644 --- a/uxd.rst +++ b/uxd.rst @@ -88,7 +88,9 @@ by itself. -l length Stop dumping after *length* bytes (not characters). If the limit is reached in the middle of a multibyte character, the entire character - will be dumped. + will be dumped. Can be given in decimal, hex (with *0x* prefix), or + octal (with *0* prefix). Negative *length* doesn't make sense, and + is an error. .. stop dumping after bytes (not characters). -- cgit v1.2.3