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-rw-r--r--lib/libc/iconv/citrus_memstream.c148
1 files changed, 148 insertions, 0 deletions
diff --git a/lib/libc/iconv/citrus_memstream.c b/lib/libc/iconv/citrus_memstream.c
new file mode 100644
index 0000000..d7ad4fd
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+++ b/lib/libc/iconv/citrus_memstream.c
@@ -0,0 +1,148 @@
+/* $FreeBSD$ */
+/* $NetBSD: citrus_memstream.c,v 1.4 2009/02/03 05:02:12 lukem Exp $ */
+
+/*-
+ * Copyright (c)2003 Citrus Project,
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "citrus_namespace.h"
+#include "citrus_region.h"
+#include "citrus_memstream.h"
+#include "citrus_bcs.h"
+
+const char *
+_citrus_memory_stream_getln(struct _citrus_memory_stream * __restrict ms,
+ size_t * __restrict rlen)
+{
+ const uint8_t *h, *p;
+ size_t ret;
+ int i;
+
+ if (ms->ms_pos>=_region_size(&ms->ms_region))
+ return (NULL);
+
+ h = p = (uint8_t *)_region_offset(&ms->ms_region, ms->ms_pos);
+ ret = 0;
+ for (i = _region_size(&ms->ms_region) - ms->ms_pos; i > 0; i--) {
+ ret++;
+ if (_bcs_iseol(*p))
+ break;
+ p++;
+ }
+
+ ms->ms_pos += ret;
+ *rlen = ret;
+ return ((const char *)h);
+}
+
+#define T_COMM '#'
+
+const char *
+_citrus_memory_stream_matchline(struct _citrus_memory_stream * __restrict ms,
+ const char * __restrict key, size_t * __restrict rlen, int iscasesensitive)
+{
+ const char *p, *q;
+ size_t keylen, len;
+
+ keylen = strlen(key);
+ for(;;) {
+ p = _citrus_memory_stream_getln(ms, &len);
+ if (p == NULL)
+ return (NULL);
+
+ /* ignore comment */
+ q = memchr(p, T_COMM, len);
+ if (q) {
+ len = q - p;
+ }
+ /* ignore trailing white space and newline */
+ _bcs_trunc_rws_len(p, &len);
+ if (len == 0)
+ continue; /* ignore null line */
+
+ /* skip white spaces at the head of the line */
+ p = _bcs_skip_ws_len(p, &len);
+ q = _bcs_skip_nonws_len(p, &len);
+
+ if ((size_t)(q - p) == keylen) {
+ if (iscasesensitive) {
+ if (memcmp(key, p, keylen) == 0)
+ break; /* match */
+ } else {
+ if (_bcs_strncasecmp(key, p, keylen) == 0)
+ break; /* match */
+ }
+ }
+ }
+
+ p = _bcs_skip_ws_len(q, &len);
+ *rlen = len;
+
+ return (p);
+}
+
+void *
+_citrus_memory_stream_chr(struct _citrus_memory_stream *ms,
+ struct _citrus_region *r, char ch)
+{
+ void *chr, *head;
+ size_t sz;
+
+ if (ms->ms_pos >= _region_size(&ms->ms_region))
+ return (NULL);
+
+ head = _region_offset(&ms->ms_region, ms->ms_pos);
+ chr = memchr(head, ch, _memstream_remainder(ms));
+ if (chr == NULL) {
+ _region_init(r, head, _memstream_remainder(ms));
+ ms->ms_pos = _region_size(&ms->ms_region);
+ return (NULL);
+ }
+ sz = (char *)chr - (char *)head;
+
+ _region_init(r, head, sz);
+ ms->ms_pos += sz + 1;
+
+ return (chr);
+}
+
+void
+_citrus_memory_stream_skip_ws(struct _citrus_memory_stream *ms)
+{
+ int ch;
+
+ while ((ch = _memstream_peek(ms)) != EOF) {
+ if (!_bcs_isspace(ch))
+ break;
+ _memstream_getc(ms);
+ }
+}
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