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Diffstat (limited to 'Build/source/libs/icu/icu-xetex/samples/ucnv/flagcb.c')
-rw-r--r--Build/source/libs/icu/icu-xetex/samples/ucnv/flagcb.c288
1 files changed, 288 insertions, 0 deletions
diff --git a/Build/source/libs/icu/icu-xetex/samples/ucnv/flagcb.c b/Build/source/libs/icu/icu-xetex/samples/ucnv/flagcb.c
new file mode 100644
index 00000000000..3344c73f2bc
--- /dev/null
+++ b/Build/source/libs/icu/icu-xetex/samples/ucnv/flagcb.c
@@ -0,0 +1,288 @@
+/********************************************************************
+ * COPYRIGHT:
+ * Copyright (c) 1999-2007, International Business Machines Corporation and
+ * others. All Rights Reserved.
+ ********************************************************************/
+
+#include "unicode/utypes.h"
+#include "unicode/ucnv.h"
+#include "flagcb.h"
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#define DEBUG_TMI 0 /* set to 1 for Too Much Information (TMI) */
+
+U_CAPI FromUFLAGContext* U_EXPORT2 flagCB_fromU_openContext()
+{
+ FromUFLAGContext *ctx;
+
+ ctx = (FromUFLAGContext*) malloc(sizeof(FromUFLAGContext));
+
+ ctx->subCallback = NULL;
+ ctx->subContext = NULL;
+ ctx->flag = FALSE;
+
+ return ctx;
+}
+
+U_CAPI void U_EXPORT2 flagCB_fromU(
+ const void *context,
+ UConverterFromUnicodeArgs *fromUArgs,
+ const UChar* codeUnits,
+ int32_t length,
+ UChar32 codePoint,
+ UConverterCallbackReason reason,
+ UErrorCode * err)
+{
+ /* First step - based on the reason code, take action */
+
+ if(reason == UCNV_UNASSIGNED) { /* whatever set should be trapped here */
+ ((FromUFLAGContext*)context)->flag = TRUE;
+ }
+
+ if(reason == UCNV_CLONE) {
+ /* The following is the recommended way to implement UCNV_CLONE
+ in a callback. */
+ UConverterFromUCallback saveCallback;
+ const void *saveContext;
+ FromUFLAGContext *old, *cloned;
+ UErrorCode subErr = U_ZERO_ERROR;
+
+#if DEBUG_TMI
+ printf("*** FLAGCB: cloning %p ***\n", context);
+#endif
+ old = (FromUFLAGContext*)context;
+ cloned = flagCB_fromU_openContext();
+
+ memcpy(cloned, old, sizeof(FromUFLAGContext));
+
+#if DEBUG_TMI
+ printf("%p: my subcb=%p:%p\n", old, old->subCallback,
+ old->subContext);
+ printf("%p: cloned subcb=%p:%p\n", cloned, cloned->subCallback,
+ cloned->subContext);
+#endif
+
+ /* We need to get the sub CB to handle cloning,
+ * so we have to set up the following, temporarily:
+ *
+ * - Set the callback+context to the sub of this (flag) cb
+ * - preserve the current cb+context, it could be anything
+ *
+ * Before:
+ * CNV -> FLAG -> subcb -> ...
+ *
+ * After:
+ * CNV -> subcb -> ...
+ *
+ * The chain from 'something' on is saved, and will be restored
+ * at the end of this block.
+ *
+ */
+
+ ucnv_setFromUCallBack(fromUArgs->converter,
+ cloned->subCallback,
+ cloned->subContext,
+ &saveCallback,
+ &saveContext,
+ &subErr);
+
+ if( cloned->subCallback != NULL ) {
+ /* Now, call the sub callback if present */
+ cloned->subCallback(cloned->subContext, fromUArgs, codeUnits,
+ length, codePoint, reason, err);
+ }
+
+ ucnv_setFromUCallBack(fromUArgs->converter,
+ saveCallback, /* Us */
+ cloned, /* new context */
+ &cloned->subCallback, /* IMPORTANT! Accept any change in CB or context */
+ &cloned->subContext,
+ &subErr);
+
+ if(U_FAILURE(subErr)) {
+ *err = subErr;
+ }
+ }
+
+ /* process other reasons here if need be */
+
+ /* Always call the subCallback if present */
+ if(((FromUFLAGContext*)context)->subCallback != NULL &&
+ reason != UCNV_CLONE) {
+ ((FromUFLAGContext*)context)->subCallback( ((FromUFLAGContext*)context)->subContext,
+ fromUArgs,
+ codeUnits,
+ length,
+ codePoint,
+ reason,
+ err);
+ }
+
+ /* cleanup - free the memory AFTER calling the sub CB */
+ if(reason == UCNV_CLOSE) {
+ free((void*)context);
+ }
+}
+
+/* Debugging callback, just outputs what happens */
+
+/* Test safe clone callback */
+
+static uint32_t debugCB_nextSerial()
+{
+ static uint32_t n = 1;
+
+ return (n++);
+}
+
+static void debugCB_print_log(debugCBContext *q, const char *name)
+{
+ if(q==NULL) {
+ printf("debugCBontext: %s is NULL!!\n", name);
+ } else {
+ if(q->magic != 0xC0FFEE) {
+ fprintf(stderr, "debugCBContext: %p:%d's magic is %x, supposed to be 0xC0FFEE\n",
+ q,q->serial, q->magic);
+ }
+ printf("debugCBContext %p:%d=%s - magic %x\n",
+ q, q->serial, name, q->magic);
+ }
+}
+
+static debugCBContext *debugCB_clone(debugCBContext *ctx)
+{
+ debugCBContext *newCtx;
+ newCtx = malloc(sizeof(debugCBContext));
+
+ newCtx->serial = debugCB_nextSerial();
+ newCtx->magic = 0xC0FFEE;
+
+ newCtx->subCallback = ctx->subCallback;
+ newCtx->subContext = ctx->subContext;
+
+#if DEBUG_TMI
+ printf("debugCB_clone: %p:%d -> new context %p:%d\n", ctx, ctx->serial, newCtx, newCtx->serial);
+#endif
+
+ return newCtx;
+}
+
+void debugCB_fromU(const void *context,
+ UConverterFromUnicodeArgs *fromUArgs,
+ const UChar* codeUnits,
+ int32_t length,
+ UChar32 codePoint,
+ UConverterCallbackReason reason,
+ UErrorCode * err)
+{
+ debugCBContext *ctx = (debugCBContext*)context;
+ /*UConverterFromUCallback junkFrom;*/
+
+#if DEBUG_TMI
+ printf("debugCB_fromU: Context %p:%d called, reason %d on cnv %p [err=%s]\n", ctx, ctx->serial, reason, fromUArgs->converter, u_errorName(*err));
+#endif
+
+ if(ctx->magic != 0xC0FFEE) {
+ fprintf(stderr, "debugCB_fromU: Context %p:%d magic is 0x%x should be 0xC0FFEE.\n", ctx,ctx->serial, ctx->magic);
+ return;
+ }
+
+ if(reason == UCNV_CLONE) {
+ /* see comments in above flagCB clone code */
+
+ UConverterFromUCallback saveCallback;
+ const void *saveContext;
+ debugCBContext *cloned;
+ UErrorCode subErr = U_ZERO_ERROR;
+
+ /* "recreate" it */
+#if DEBUG_TMI
+ printf("debugCB_fromU: cloning..\n");
+#endif
+ cloned = debugCB_clone(ctx);
+
+ if(cloned == NULL) {
+ fprintf(stderr, "debugCB_fromU: internal clone failed on %p\n", ctx);
+ *err = U_MEMORY_ALLOCATION_ERROR;
+ return;
+ }
+
+ ucnv_setFromUCallBack(fromUArgs->converter,
+ cloned->subCallback,
+ cloned->subContext,
+ &saveCallback,
+ &saveContext,
+ &subErr);
+
+ if( cloned->subCallback != NULL) {
+#if DEBUG_TMI
+ printf("debugCB_fromU:%p calling subCB %p\n", ctx, cloned->subCallback);
+#endif
+ /* call subCB if present */
+ cloned->subCallback(cloned->subContext, fromUArgs, codeUnits,
+ length, codePoint, reason, err);
+ } else {
+ printf("debugCB_fromU:%p, NOT calling subCB, it's NULL\n", ctx);
+ }
+
+ /* set back callback */
+ ucnv_setFromUCallBack(fromUArgs->converter,
+ saveCallback, /* Us */
+ cloned, /* new context */
+ &cloned->subCallback, /* IMPORTANT! Accept any change in CB or context */
+ &cloned->subContext,
+ &subErr);
+
+ if(U_FAILURE(subErr)) {
+ *err = subErr;
+ }
+ }
+
+ /* process other reasons here */
+
+ /* always call subcb if present */
+ if(ctx->subCallback != NULL && reason != UCNV_CLONE) {
+ ctx->subCallback(ctx->subContext,
+ fromUArgs,
+ codeUnits,
+ length,
+ codePoint,
+ reason,
+ err);
+ }
+
+ if(reason == UCNV_CLOSE) {
+#if DEBUG_TMI
+ printf("debugCB_fromU: Context %p:%d closing\n", ctx, ctx->serial);
+#endif
+ free(ctx);
+ }
+
+#if DEBUG_TMI
+ printf("debugCB_fromU: leaving cnv %p, ctx %p: err %s\n", fromUArgs->converter, ctx, u_errorName(*err));
+#endif
+}
+
+debugCBContext *debugCB_openContext()
+{
+ debugCBContext *ctx;
+
+ ctx = malloc(sizeof(debugCBContext));
+
+ if(ctx != NULL) {
+ ctx->magic = 0xC0FFEE;
+ ctx->serial = debugCB_nextSerial();
+ ctx->subCallback = NULL;
+ ctx->subContext = NULL;
+
+#if DEBUG_TMI
+ fprintf(stderr, "debugCB:openContext opened[%p] = serial #%d\n", ctx, ctx->serial);
+#endif
+
+ }
+
+
+ return ctx;
+}
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