50 lines
969 B
C
50 lines
969 B
C
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/*
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* xconv.c -- An SQLite3 C extension that uses libxconv to convert from
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* ISO 6937 to UTF-8.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sqlite3ext.h>
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#include <xconv.h>
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SQLITE_EXTENSION_INIT1
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void
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sqlite_xconv(sqlite3_context *c, int argc, sqlite3_value **argv)
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{
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char *src, *dst;
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size_t dlen;
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if (argc != 1 || !(src = (char *)sqlite3_value_text(argv[0])))
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{
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sqlite3_result_error(c, "xconv requires 1 parameter", -1);
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return;
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}
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dlen = strlen(src) + 20;
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if (!(dst = (char *)malloc(dlen)))
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{
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sqlite3_result_error(c, "malloc() failed", -1);
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return;
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}
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if (!xconv(src, dst, dlen))
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{
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free(dst);
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dst = strdup(src);
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}
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sqlite3_result_text(c, dst, -1, free);
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}
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int sqlite3_qxconv_init(sqlite3 *db, char **err,
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const sqlite3_api_routines *api)
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{
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SQLITE_EXTENSION_INIT2(api);
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return sqlite3_create_function(db, "xconv", 1,
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SQLITE_UTF8 | SQLITE_DETERMINISTIC, NULL,
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sqlite_xconv, NULL, NULL);
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}
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