Simple iconv library

[yaz-moved-to-github.git] / util / siconvtst.c

diff --git a/util/siconvtst.c b/util/siconvtst.c
new file mode 100644 (file)
index 0000000..c06befe
--- /dev/null
+++ b/util/siconvtst.c
@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 1997-2002, Index Data
+ * See the file LICENSE for details.
+ *
+ * $Id: siconvtst.c,v 1.1 2002-08-27 14:02:13 adam Exp $
+ */
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <errno.h>
+#include <string.h>
+#include <ctype.h>
+
+#include <yaz/yaz-util.h>
+
+#define CHUNK 8
+
+static void convert (FILE *inf, yaz_iconv_t cd)
+{
+    char inbuf0[CHUNK], *inbuf = inbuf0;
+    char outbuf0[CHUNK], *outbuf = outbuf0;
+    size_t outbytesleft = CHUNK;
+    size_t inbytesleft = CHUNK;
+
+    while (1)
+    {
+        size_t r = fread (inbuf, 1, inbytesleft, inf);
+        if (inbytesleft != r)
+        {
+            if (ferror(inf))
+            {
+                fprintf (stderr, "yaziconv: error reading file\n");
+                exit (6);
+            }
+            if (r == 0)
+            {
+                if (outbuf != outbuf0)
+                    fwrite (outbuf0, 1, outbuf - outbuf0, stdout);
+                break;
+            }
+        }
+        r = yaz_iconv (cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft);
+        if (r == (size_t)(-1))
+        {
+            if (yaz_iconv_error(cd) == YAZ_ICONV_EILSEQ)
+            {
+                fprintf (stderr, "invalid sequence\n");
+                return ;
+            }
+
+            if (yaz_iconv_error(cd) == EINVAL) /* incomplete input */
+            { 
+                size_t i;
+                for (i = 0; i<inbytesleft; i++)
+                    inbuf0[i] = inbuf[i];
+                inbytesleft = CHUNK - inbytesleft;
+            }
+            if (yaz_iconv_error(cd) == E2BIG) /* no more output space */
+            {
+                fwrite (outbuf0, 1, outbuf - outbuf0, stdout);
+                outbuf = outbuf0;
+                outbytesleft = CHUNK;
+            }
+            else
+            {
+                fprintf (stderr, "yaziconv: unknown error\n");
+                exit (7);
+            }
+        }
+        else
+        {
+            inbuf = inbuf0;
+            inbytesleft = CHUNK;
+        }
+    }
+}
+
+int main (int argc, char **argv)
+{
+    int ret;
+    char *from = 0;
+    char *to = 0;
+    char *arg;
+    yaz_iconv_t cd;
+    FILE *inf = stdin;
+
+    while ((ret = options ("f:t:", argv, argc, &arg)) != -2)
+    {
+        switch (ret)
+        {
+        case 0:
+            inf = fopen (arg, "rb");
+            if (!inf)
+            {
+                fprintf (stderr, "yaziconv: cannot open %s", arg);
+                exit (2);
+            }
+            break;
+        case 'f':
+            from = arg;
+            break;
+        case 't':
+            to = arg;
+            break;
+        default:
+            fprintf (stderr, "yaziconv: Usage\n"
+                     "siconv -f encoding -t encoding [file]\n");
+            exit(1);
+        }
+    }
+    if (!to)
+    {
+        fprintf (stderr, "yaziconv: -t encoding missing\n");
+        exit (3);
+    }
+    if (!from)
+    {
+        fprintf (stderr, "yaziconv: -f encoding missing\n");
+        exit (4);
+    }
+    cd = yaz_iconv_open (to, from);
+    if (!cd)
+    {
+        fprintf (stderr, "yaziconv: unsupported encoding\n");
+        exit (5);
+    }
+
+    
+    yaz_iconv_close (cd);
+}