From a1ca8a9afa7d09285f4f430099abada5b858dc29 Mon Sep 17 00:00:00 2001 From: Aki Niemi Date: Mon, 14 Sep 2009 16:21:06 +0300 Subject: Add and modify string getters Add a getter for latin ASCII only tags, and change the alpha tag getter. Turns out not all alpha tags in ISI are of the length-value variety. --- gisi/iter.c | 30 +++++++++++++++++++++++++----- 1 file changed, 25 insertions(+), 5 deletions(-) (limited to 'gisi/iter.c') diff --git a/gisi/iter.c b/gisi/iter.c index dfc6dfa8..dc555a73 100644 --- a/gisi/iter.c +++ b/gisi/iter.c @@ -113,25 +113,45 @@ bool g_isi_sb_iter_get_oper_code(GIsiSubBlockIter *iter, char *mcc, } bool g_isi_sb_iter_get_alpha_tag(GIsiSubBlockIter *iter, char **utf8, - int pos) + size_t len, int pos) { uint8_t *ucs2 = NULL; - int len = 0; if (pos > iter->start[1]) return false; - len = iter->start[pos] * 2; /* Alpha tags are UCS-2 */ + if (!utf8 || len == 0 || pos + len > iter->start[1]) + return false; - if (!utf8 || len == 0 || pos + 1 + len > iter->start[1]) + ucs2 = iter->start + pos; + if (ucs2 + len > iter->end) return false; - ucs2 = iter->start + pos + 1; *utf8 = g_convert((const char *)ucs2, len, "UTF-8//TRANSLIT", "UCS-2BE", NULL, NULL, NULL); return utf8 != NULL; } +bool g_isi_sb_iter_get_latin_tag(GIsiSubBlockIter *iter, char **latin, + size_t len, int pos) +{ + uint8_t *str = NULL; + + if (pos > iter->start[1]) + return false; + + if (!latin || len == 0 || pos + len > iter->start[1]) + return false; + + str = iter->start + pos; + if (str + len > iter->end) + return false; + + *latin = g_strndup((char *)str, len); + + return latin != NULL; +} + bool g_isi_sb_iter_init(const void restrict *data, size_t len, GIsiSubBlockIter *iter) { if (!iter || !data || len == 0) -- cgit v1.2.3