diff options
| -rw-r--r-- | lib/libpm.c | 29 | ||||
| -rw-r--r-- | lib/pm.h | 5 |
2 files changed, 34 insertions, 0 deletions
diff --git a/lib/libpm.c b/lib/libpm.c index f36b7a50..88b790e6 100644 --- a/lib/libpm.c +++ b/lib/libpm.c @@ -1662,3 +1662,32 @@ pm_check(FILE * const file, +void +pm_drain(FILE * const fileP, + uint const limit, + uint * const bytesReadP) { +/*---------------------------------------------------------------------------- + Read bytes from *fileP until EOF and return as *bytesReadP how many there + were. + + But don't read any more than 'limit'. + + This is a good thing to call after reading an input file to be sure you + didn't leave some input behind, which could mean you didn't properly + interpret the file. +-----------------------------------------------------------------------------*/ + uint bytesRead; + bool eof; + + for (bytesRead = 0, eof = false; !eof && bytesRead < 4096;) { + + int rc; + + rc = fgetc(fileP); + + eof = (rc == EOF); + if (!eof) + ++bytesRead; + } + *bytesReadP = bytesRead; +} diff --git a/lib/pm.h b/lib/pm.h index 8265c9ea..232fc363 100644 --- a/lib/pm.h +++ b/lib/pm.h @@ -345,6 +345,11 @@ pm_check(FILE * const file, pm_filepos const need_raster_size, enum pm_check_code * const retval_p); +void +pm_drain(FILE * const fileP, + unsigned int const limit, + unsigned int * const bytesReadP); + char * pm_arg0toprogname(const char arg0[]); |