Hi all,
I am looking for someone to help port enough of ICU so that a function to
locale-sensitive string searching can be exposed to JS.
If you are interested, please contact me off-list, so we can discuss
remuneration etc.
For clarity below is the C function (or similar) I want to expose to
Javascript:
#include <stdlib.h>
#include <stdio.h>
#include <unicode/ucol.h>
#include <unicode/usearch.h>
#include <unicode/ustring.h>
void wrap_search(const char* utf8Needle, const char* utf8Haystack, const
char* locale, void(*onResult)(int32_t, const UChar*)) {
UErrorCode status = U_ZERO_ERROR;
printf("about to call ucol_open");
UCollator* col = ucol_open(locale, &status);
if (U_FAILURE(status)) {
printf("ucol_open Error code: %u\n", status);
return;
}
printf("about to call ucol_setStrength");
ucol_setStrength(col, UCOL_PRIMARY);
int32_t needleLength;
u_strFromUTF8(NULL, 0, &needleLength, utf8Needle, -1, &status);
if (U_FAILURE(status)) {
printf("u_strFromUTF8 (needle preflight) Error code: %u\n", status);
return;
}
needleLength += 1;
UChar* needle = (UChar*)malloc(needleLength * sizeof(UChar));
u_strFromUTF8(needle, needleLength, &needleLength, utf8Needle, -1, &status
);
if (U_FAILURE(status)) {
printf("u_strFromUTF8(needle) Error code: %u\n", status);
return;
}
int32_t haystackLength;
u_strFromUTF8(NULL, 0, &haystackLength, utf8Haystack, -1, &status);
if (U_FAILURE(status)) {
printf("u_strFromUTF8 (haystack preflight) Error code: %u\n", status);
return;
}
haystackLength += 1;
UChar* haystack = (UChar*)malloc(haystackLength * sizeof(UChar));
u_strFromUTF8(haystack, haystackLength, &haystackLength, utf8Haystack, -1,
&status);
if (U_FAILURE(status)) {
printf("u_strFromUTF8(haystack) Error code: %u\n", status);
return;
}
printf("about to call usearch_openFromCollator");
UStringSearch* searcher = usearch_openFromCollator(needle, -1, haystack, -
1, col, NULL, &status);
if (U_FAILURE(status)) {
printf("usearch_openFromCollator Error code: %u\n", status);
ucol_close(col);
return;
}
printf("about to call usearch_first");
int32_t index = usearch_first(searcher, &status);
if (U_FAILURE(status)) {
printf("usearch_first Error code: %u\n", status);
usearch_close(searcher);
ucol_close(col);
return;
}
while (index != USEARCH_DONE) {
printf("about to call usearch_getMatchedLength");
int32_t size = usearch_getMatchedLength(searcher) + 1;
printf("about to call malloc");
UChar* match = (UChar*)malloc(size * sizeof(UChar));
if(!match) {
printf("failed to allocate enough memory for the match");
usearch_close(searcher);
ucol_close(col);
return;
}
printf("about to call usearch_getMatchedText");
usearch_getMatchedText(searcher, match, size, &status);
if (U_FAILURE(status)) {
printf("usearch_getMatchedText Error code: %u\n", status);
free(match);
usearch_close(searcher);
ucol_close(col);
return;
}
printf("about to call onResult");
printf("got result, index: %d, length: %d", index, size);
// onResult(index, match);
printf("about to call free");
free(match);
printf("about to call usearch_next");
index = usearch_next(searcher, &status);
if (U_FAILURE(status)) {
printf("usearch_next Error code: %u\n", status);
usearch_close(searcher);
ucol_close(col);
return;
}
}
printf("about to call usearch_close");
usearch_close(searcher);
printf("about to call ucol_close");
ucol_close(col);
}
Cheers,
Isaac
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