diff options
Diffstat (limited to 'source')
| -rw-r--r-- | source/fitz/output-pcl.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/source/fitz/output-pcl.c b/source/fitz/output-pcl.c index 5a5ba996..65fff2fa 100644 --- a/source/fitz/output-pcl.c +++ b/source/fitz/output-pcl.c @@ -703,18 +703,31 @@ mode2compress(unsigned char *out, unsigned char *in, int in_len) } else { + /* Now copy as many literals as possible. We only + * break the run at a length of 127, at the end, + * or where we have 3 repeated values. */ int i; /* How many literals do we need to copy? */ - for (run = 1; run < 127 && x+run < in_len; run++) - if (in[run] == in[run+1]) + for (; run < 127 && x+run+2 < in_len; run++) + if (in[run] == in[run+1] && in[run] == in[run+2]) break; + /* Don't leave stragglers at the end */ + if (x + run + 2 >= in_len) + { + run = in_len - x; + if (run > 127) + run = 127; + } out[out_len++] = run-1; for (i = 0; i < run; i++) + { out[out_len++] = in[i]; + } } in += run; } + return out_len; } |