X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdio%2Fperror.c;h=bf3b3afee1c1bf0028218f657263853c0ffcc7a6;hb=a7a8d2f1c85c2d7760d4d3479e90466cc3a81b04;hp=c59ca0b290a582934f50c3b4a467002915a4a527;hpb=e5112b619d1aae8ffc439389cfcbd3b2b4bd2454;p=pdclib

diff --git a/functions/stdio/perror.c b/functions/stdio/perror.c
index c59ca0b..bf3b3af 100644
--- a/functions/stdio/perror.c
+++ b/functions/stdio/perror.c
@@ -10,9 +10,16 @@
 
 #ifndef REGTEST
 
+#include <errno.h>
+
+/* TODO: Doing this via a static array is not the way to do it. */
 void perror( const char * s )
 {
-    /* TODO: Implement. */
+    if ( ( s != NULL ) && ( s[0] != '\n' ) )
+    {
+        fprintf( stderr, "%s: ", s );
+    }
+    fprintf( stderr, "%s\n", _PDCLIB_errno_texts[ errno ] );
     return;
 }
 
@@ -20,10 +27,24 @@ void perror( const char * s )
 
 #ifdef TEST
 #include <_PDCLIB_test.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
 
 int main( void )
 {
-    TESTCASE( NO_TESTDRIVER );
+    FILE * fh;
+    unsigned long long max = ULLONG_MAX;
+    char buffer[100];
+    sprintf( buffer, "%llu", max );
+    TESTCASE( ( fh = freopen( testfile, "wb+", stderr ) ) != NULL );
+    TESTCASE( strtol( buffer, NULL, 10 ) == LONG_MAX );
+    perror( "Test" );
+    rewind( fh );
+    TESTCASE( fread( buffer, 1, 7, fh ) == 7 );
+    TESTCASE( memcmp( buffer, "Test: ", 6 ) == 0 );
+    TESTCASE( fclose( fh ) == 0 );
+    TESTCASE( remove( testfile ) == 0 );
     return TEST_RESULTS;
 }