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authorgiraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8>2023-06-28 17:29:32 +0000
committergiraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8>2023-06-28 17:29:32 +0000
commit23ce26f64c34e30951ad9ade2151552ed77e7357 (patch)
treed73b31a0c2f7c7be4a69f8a8e84e00dd39c432b5 /converter/other/cameratopam/stdio_nofail.c
parent1b6e51a266008348ad93ed8b6ac9ec91b5024fea (diff)
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git-svn-id: http://svn.code.sf.net/p/netpbm/code/stable@4558 9d0c8265-081b-0410-96cb-a4ca84ce46f8
Diffstat (limited to 'converter/other/cameratopam/stdio_nofail.c')
-rw-r--r--converter/other/cameratopam/stdio_nofail.c120
1 files changed, 120 insertions, 0 deletions
diff --git a/converter/other/cameratopam/stdio_nofail.c b/converter/other/cameratopam/stdio_nofail.c
new file mode 100644
index 00000000..97a8796d
--- /dev/null
+++ b/converter/other/cameratopam/stdio_nofail.c
@@ -0,0 +1,120 @@
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include <netpbm/pm.h>
+
+#include "stdio_nofail.h"
+
+
+
+size_t
+fread_or_eof_nofail(void * const ptr,
+                    size_t const size,
+                    size_t const nmemb,
+                    FILE * const streamP) {
+
+    size_t rc;
+
+    rc = fread(ptr, size, nmemb, streamP);
+
+    if (rc < nmemb) {
+        if (!feof(streamP))
+            pm_error("File read failed.  Errno=%d (%s)",
+                     errno, strerror(errno));
+    }
+    return rc;
+}
+
+
+
+void
+fread_nofail(void * const ptr,
+             size_t const size,
+             size_t const nmemb,
+             FILE * const streamP) {
+
+    size_t rc;
+
+    rc = fread(ptr, size, nmemb, streamP);
+
+    if (rc < nmemb) {
+        if (feof(streamP))
+            pm_error("File read failed.  Premature end of file");
+        else
+            pm_error("File read failed.  Errno=%d (%s)",
+                     errno, strerror(errno));
+    }
+}
+
+
+
+int
+fgetc_nofail(FILE * streamP) {
+
+    int rc;
+
+    rc = fgetc(streamP);
+
+    if (rc == EOF) {
+        if (feof(streamP))
+            pm_error("File read failed.  Premature end of file");
+        else
+            pm_error("File read failed.  Errno=%d (%s)",
+                     errno, strerror(errno));
+    }
+    return rc;
+}
+
+
+
+int
+fseek_nofail(FILE * const streamP,
+             long   const offset,
+             int    const whence) {
+
+    int rc;
+
+    rc = fseek(streamP, offset, whence);
+
+    if (rc < 0)
+        pm_error("File seek failed.  Errno=%d (%s)", errno, strerror(errno));
+
+    return rc;
+}
+
+
+
+long
+ftell_nofail(FILE * const streamP) {
+
+    long rc;
+
+    rc = ftell(streamP);
+
+    if (rc < 0)
+        pm_error("File position query failed.  Errno=%d (%s)",
+                 errno, strerror(errno));
+
+    return rc;
+}
+
+
+
+char *
+fgets_nofail(char * const s,
+             int    const size,
+             FILE * const streamP) {
+
+    char * rc;
+
+    rc = fgets(s, size, streamP);
+
+    if (ferror(streamP))
+        pm_error("File read failed.  Errno=%d (%s)", errno, strerror(errno));
+
+    return rc;
+}
+
+
+