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-rw-r--r--src/enca.c161
1 files changed, 161 insertions, 0 deletions
diff --git a/src/enca.c b/src/enca.c
new file mode 100644
index 0000000..95e2f49
--- /dev/null
+++ b/src/enca.c
@@ -0,0 +1,161 @@
+#include <stdio.h>
+
+#include "librcc.h"
+
+#include "plugin.h"
+#include "enca.h"
+
+rcc_engine rcc_enca_engine = {
+ "Enca Library", &rccEncaInitContext, &rccEncaFreeContext, &rccEnca, {"UTF-8", NULL}
+};
+
+static rcc_library_handle enca_handle = NULL;
+static rcc_engine enca_engines[sizeof(rcc_default_languages)/sizeof(rcc_language)];
+
+
+static int rccEncaLibraryLoad() {
+#ifdef RCC_ENCA_DYNAMIC
+ if (enca_handle) return 0;
+
+ enca_handle = rccLibraryLoad(RCC_ENCA_LIB);
+ if (!enca_handle) return -1;
+
+ enca_set_multibyte=rccLibraryFind(enca_handle,"enca_set_multibyte");
+ enca_set_interpreted_surfaces=rccLibraryFind(enca_handle,"enca_set_interpreted_surfaces");
+ enca_set_ambiguity=rccLibraryFind(enca_handle,"enca_set_ambiguity");
+ enca_set_filtering=rccLibraryFind(enca_handle,"enca_set_filtering");
+ enca_set_garbage_test=rccLibraryFind(enca_handle,"enca_set_garbage_test");
+ enca_set_termination_strictness=rccLibraryFind(enca_handle,"enca_set_termination_strictness");
+ enca_set_significant=rccLibraryFind(enca_handle,"enca_set_significant");
+ enca_set_threshold=rccLibraryFind(enca_handle,"enca_set_threshold");
+ enca_charset_name=rccLibraryFind(enca_handle,"enca_charset_name");
+ enca_get_language_charsets=rccLibraryFind(enca_handle,"enca_get_language_charsets");
+ enca_analyser_alloc=rccLibraryFind(enca_handle,"enca_analyser_alloc");
+ enca_analyser_free=rccLibraryFind(enca_handle,"enca_analyser_free");
+ enca_analyse_const=rccLibraryFind(enca_handle,"enca_analyse_const");
+
+ if ((!enca_set_multibyte)||(!enca_set_interpreted_surfaces)||(!enca_set_ambiguity)||
+ (!enca_set_filtering)||(!enca_set_garbage_test)||(!enca_set_termination_strictness)||
+ (!enca_set_significant)||(!enca_set_threshold)||(!enca_charset_name)||
+ (!enca_get_language_charsets)||(!enca_analyser_alloc)||(!enca_analyser_free)||
+ (!enca_analyse_const)) {
+ rccLibraryClose(enca_handle);
+ enca_handle = NULL;
+# ifdef RCC_DEBUG
+ perror( "rccEnca. Incomplete function set in library" );
+# endif /* RCC_DEBUG */
+ }
+
+#endif /* RCC_ENCA_DYNAMIC */
+ return 0;
+}
+
+static void rccEncaLibraryUnload() {
+#ifdef RCC_ENCA_DYNAMIC
+ if (enca_handle) {
+ rccLibraryUnload(enca_handle);
+ enca_handle = NULL;
+ }
+#endif /* RCC_ENCA_DYNAMIC */
+}
+
+
+int rccEncaInit() {
+ int err;
+ unsigned int i,j,k,l;
+
+ rcc_engine_list engines;
+
+ int *charsets;
+ size_t ncharsets;
+
+#ifdef RCC_ENCA_SUPPORT
+ err = rccEncaLibraryLoad();
+ if (err) return err;
+
+ for (i=0;rcc_default_languages[i];i++) {
+ engines = rcc_default_languages[i].engines;
+ for (j=0;engines[j];j++)
+ if (j >= RCC_MAX_ENGINES) continue;
+
+ charsets = enca_get_language_charsets(rcc_default_languages[i].sn, &ncharsets);
+ if (charsets) {
+ memcpy(enca_engines+i, &rcc_enca_engine, sizeof(rcc_engine));
+ for (k=0;enca_engines[i].charsets[k];k++);
+ if (n_charsets+k>=RCC_MAX_CHARSETS) n_charsets = RCC_MAX_CHARSETS-k;
+
+ for (l=0;l<n_charsets;l++)
+ enca_engines[j].charset[k++] = enca_charset_name(charsets[l], ENCA_NAME_STYLE_ICONV);
+ enca_engines[j].charset[k] = NULL;
+
+ engines[j] = enca_engines + i;
+ engines[j+1] = NULL;
+
+ free(charsets);
+ }
+ }
+#endif /* RCC_ENCA_SUPPORT */
+
+ return 0;
+}
+
+void rccEncaFree() {
+#ifdef RCC_ENCA_SUPPORT
+ rccEncaLibraryUnload();
+#endif /* RCC_ENCA_SUPPORT */
+}
+
+
+rcc_engine_internal rccEncaInitContext(rcc_engine_context *ctx) {
+#ifdef RCC_ENCA_SUPPORT
+ EncaAnalyser enca;
+
+ if ((!ctx)||(!ctx->language)) return NULL;
+
+ enca = enca_analyser_alloc(ctx->lanuage->sn);
+ if (!enca) return NULL;
+
+ enca_set_threshold(enca, 1);
+ enca_set_multibyte(enca, 1);
+ enca_set_ambiguity(enca, 1);
+ enca_set_garbage_test(enca, 0);
+ enca_set_filtering(enca, 0);
+ enca_set_significant(enca,1);
+ enca_set_termination_strictness(enca,0);
+
+ return (rcc_engine_internal)enca;
+#else /* RCC_ENCA_SUPPORT */
+ return NULL;
+#endif /* RCC_ENCA_SUPPORT */
+}
+
+void rccEncaFreeContext(rcc_engine_context ctx) {
+ rcc_engine_internal internal;
+#ifdef RCC_ENCA_SUPPORT
+ internal = rccEngineGetInternal(ctx);
+ if (internal)
+ enca_analyser_free(internal);
+#endif /* RCC_ENCA_SUPPORT */
+}
+
+rcc_charset_id rccEnca(rcc_engine_context ctx, char *buf, int len) {
+#ifdef RCC_ENCA_SUPPORT
+ rcc_engine_internal internal;
+ const char *charset;
+ EncaEncoding ee;
+
+ internal = rccEngineGetInternal(ctx);
+ if ((!internal)||(!buf)) return -1;
+
+
+ len = STRLEN(buf, len);
+
+ ee = enca_analyse_const((EncaAnalyser)ctx->internal,buf,len);
+ if (ee.charset<0) return -1;
+
+ charset = enca_charset_name(ee.charset, ENCA_NAME_STYLE_ICONV);
+ return rccGetAutoCharsetByName(ctx->ctx, charset);
+#else /* RCC_ENCA_SUPPORT */
+ return -1;
+#endif /* RCC_ENCA_SUPPORT */
+}