regex_replace

Makefile

CFLAGS=-Wall -g

all:
	cc -fPIC -o test.exe icu_replace.c test.c -licuin -licuuc -licudt -lsqlite3
#    cc -fPIC -o test_glib.exe `pkg-config --cflags glib-2.0` glib_replace.c test_glib.c -lglib-2.0 -lintl -lsqlite3
#	cc -fPIC -o test.exe icu_replace.c test.c $(pkg-config --libs icu-i18n) $(pkg-config --libs sqlite3)
#   cc -fPIC -o test_glib.exe `pkg-config --cflags glib-2.0` glib_replace.c test_glib.c `pkg-config --libs glib-2.0` `pkg-config --libs sqlite3`

clean:
	rm -f test.exe
	rm -f test_glib.exe

test.c

#include <stdio.h>
#include <sqlite3.h>

extern void icuReplaceAllFunc(
        sqlite3_context *context,
        int argc,
        sqlite3_value **argv
);

static int init(
        sqlite3 *db,
        char **pzErrMsg,
        const sqlite3_api_routines *pApi
){
    sqlite3_create_function_v2(db, "regex_replace", 3, SQLITE_ANY, 0, icuReplaceAllFunc, NULL, NULL, NULL);
    return SQLITE_OK;
}

int main() {
    int rc = sqlite3_initialize();
    if (rc != SQLITE_OK) {
        printf("sqlite3_initialize: %d\n", rc);
        return rc;
    }
    rc = sqlite3_auto_extension((void(*)(void))init);
    if (rc != SQLITE_OK) {
        printf("sqlite3_auto_extension: %d\n", rc);
        return rc;
    }
    sqlite3 *db = NULL;
    rc = sqlite3_open_v2(":memory:", &db, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_OPEN_EXRESCODE, NULL);
    if (rc != SQLITE_OK || db == NULL) {
        printf("sqlite3_open_v2: %d, %s\n", rc, sqlite3_errmsg(db));
        return rc;
    }

    rc = sqlite3_exec(db, "CREATE TABLE test (id INT, name TEXT); \
                       INSERT INTO test VALUES (1, 'Laurent'); \
                       INSERT INTO test VALUES (2, 'Sergiu'); \
                        ", NULL, NULL, NULL);
    if (rc != SQLITE_OK) {
        printf("sqlite3_exec: %d, %s\n", rc, sqlite3_errmsg(db));
        return rc;
    }

    sqlite3_stmt *stmt = NULL;
    rc = sqlite3_prepare_v2(db, "select regex_replace('aur', name, 'asdfasdfasdf') from test;", -1, &stmt, NULL);
    //rc = sqlite3_prepare_v2(db, "select name from test;", -1, &stmt, NULL);
    if (stmt == NULL || SQLITE_OK != rc) {
        printf("sqlite3_prepare_v2: %d, %s\n", rc, sqlite3_errmsg(db));
        return rc;
    }

    rc = sqlite3_step(stmt);
    while (rc == SQLITE_ROW) {
        printf("%s\n", sqlite3_column_text(stmt, 0));
        rc = sqlite3_step(stmt);
    }
    if (SQLITE_OK != rc && SQLITE_DONE != rc) {
        printf("sqlite3_step: %d, %s\n", rc, sqlite3_errmsg(db));
        return rc;
    }

    sqlite3_finalize(stmt);
    sqlite3_close(db);
    return 0;
}

test_glib.c

#include <stdio.h>
#include <sqlite3.h>

extern void glibReplaceAllFunc(
        sqlite3_context *ctx,
        int argc,
        sqlite3_value **argv
);

static int init(
        sqlite3 *db,
        char **pzErrMsg,
        const sqlite3_api_routines *pApi
){
    sqlite3_create_function_v2(db, "regex_replace", 3, SQLITE_UTF8, 0, glibReplaceAllFunc, NULL, NULL, NULL);
    return SQLITE_OK;
}

int main() {
    int rc = sqlite3_initialize();
    if (rc != SQLITE_OK) {
        printf("sqlite3_initialize: %d\n", rc);
        return rc;
    }
    rc = sqlite3_auto_extension((void(*)(void))init);
    if (rc != SQLITE_OK) {
        printf("sqlite3_auto_extension: %d\n", rc);
        return rc;
    }
    sqlite3 *db = NULL;
    rc = sqlite3_open_v2(":memory:", &db, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_OPEN_EXRESCODE, NULL);
    if (rc != SQLITE_OK || db == NULL) {
        printf("sqlite3_open_v2: %d, %s\n", rc, sqlite3_errmsg(db));
        return rc;
    }

    rc = sqlite3_exec(db, "CREATE TABLE test (id INT, name TEXT); \
                       INSERT INTO test VALUES (1, 'Laurent'); \
                       INSERT INTO test VALUES (2, 'Sergiu'); \
                        ", NULL, NULL, NULL);
    if (rc != SQLITE_OK) {
        printf("sqlite3_exec: %d, %s\n", rc, sqlite3_errmsg(db));
        return rc;
    }

    sqlite3_stmt *stmt = NULL;
    //rc = sqlite3_prepare_v2(db, "select regex_replace('aur', name, 'asdfasdfasdf') from test;", -1, &stmt, NULL);
    rc = sqlite3_prepare_v2(db, "select regex_replace('aur', 'Laurent', '');", -1, &stmt, NULL);
    if (stmt == NULL || SQLITE_OK != rc) {
        printf("sqlite3_prepare_v2: %d, %s\n", rc, sqlite3_errmsg(db));
        return rc;
    }

    rc = sqlite3_step(stmt);
    while (rc == SQLITE_ROW) {
        printf("%s\n", sqlite3_column_text(stmt, 0));
        rc = sqlite3_step(stmt);
    }
    if (SQLITE_OK != rc && SQLITE_DONE != rc) {
        printf("sqlite3_step: %d, %s\n", rc, sqlite3_errmsg(db));
        return rc;
    }

    sqlite3_finalize(stmt);
    sqlite3_close(db);
    return 0;
}