2 Unix SMB/CIFS implementation.
4 provide access to string functions
6 Copyright (C) Andrew Tridgell 2005
7 Copyright (C) Jelmer Vernooij 2005 (substr)
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 #include "scripting/ejs/smbcalls.h"
26 #include "lib/appweb/ejs/ejs.h"
30 var len = strlen(str);
32 static int ejs_strlen(MprVarHandle eid, int argc, char **argv)
35 ejsSetErrorMsg(eid, "strlen invalid arguments");
38 mpr_Return(eid, mprCreateIntegerVar(strlen_m(argv[0])));
44 var s = strlower("UPPER");
46 static int ejs_strlower(MprVarHandle eid, int argc, char **argv)
50 ejsSetErrorMsg(eid, "strlower invalid arguments");
53 s = strlower_talloc(mprMemCtx(), argv[0]);
54 mpr_Return(eid, mprString(s));
61 var s = strupper("lower");
63 static int ejs_strupper(MprVarHandle eid, int argc, char **argv)
67 ejsSetErrorMsg(eid, "strupper invalid arguments");
70 s = strupper_talloc(mprMemCtx(), argv[0]);
71 mpr_Return(eid, mprString(s));
78 var s = strstr(string, substring);
80 static int ejs_strstr(MprVarHandle eid, int argc, char **argv)
84 ejsSetErrorMsg(eid, "strstr invalid arguments");
87 s = strstr(argv[0], argv[1]);
88 mpr_Return(eid, mprString(s));
94 list = split(".", "a.foo.bar");
96 NOTE: does not take a regular expression, unlink perl split()
98 static int ejs_split(MprVarHandle eid, int argc, char **argv)
100 const char *separator;
104 TALLOC_CTX *tmp_ctx = talloc_new(mprMemCtx());
106 ejsSetErrorMsg(eid, "split invalid arguments");
112 ret = mprObject("list");
114 while ((p = strstr(s, separator))) {
115 char *s2 = talloc_strndup(tmp_ctx, s, (int)(p-s));
116 mprAddArray(&ret, count++, mprString(s2));
118 s = p + strlen(separator);
121 mprAddArray(&ret, count++, mprString(s));
123 talloc_free(tmp_ctx);
124 mpr_Return(eid, ret);
130 str = substr(orig[, start_offset[, length]]);
133 if start_offset < 0 then start_offset+=strlen(orig)
134 if length < 0 then length+=strlen(orig)-start_offset
136 (as found in many other languages)
138 static int ejs_substr(MprVarHandle eid, int argc, struct MprVar **argv)
140 int start_offset = 0;
145 if (argc < 1 || argc > 3 ||
146 argv[0]->type != MPR_TYPE_STRING) {
147 ejsSetErrorMsg(eid, "substr invalid arguments");
152 mpr_Return(eid, *argv[0]);
156 orig = mprToString(argv[0]);
157 start_offset = mprToInt(argv[1]);
158 if (start_offset < 0) start_offset += strlen(orig);
159 if (start_offset < 0 || start_offset > strlen(orig)) {
160 ejsSetErrorMsg(eid, "substr arg 2 out of bounds");
165 length = mprToInt(argv[1]);
166 if (length < 0) length += strlen(orig) - start_offset;
167 if (length < 0 || length+start_offset > strlen(orig)) {
168 ejsSetErrorMsg(eid, "substr arg 3 out of bounds");
172 length = strlen(orig);
175 target = talloc_strndup(mprMemCtx(), orig+start_offset, length);
177 mpr_Return(eid, mprString(target));
186 str = join("DC=", list);
188 static int ejs_join(MprVarHandle eid, int argc, struct MprVar **argv)
191 const char *separator;
194 TALLOC_CTX *tmp_ctx = talloc_new(mprMemCtx());
196 argv[0]->type != MPR_TYPE_STRING ||
197 argv[1]->type != MPR_TYPE_OBJECT) {
198 ejsSetErrorMsg(eid, "join invalid arguments");
202 separator = mprToString(argv[0]);
203 list = mprToArray(tmp_ctx, argv[1]);
205 if (list == NULL || list[0] == NULL) {
206 talloc_free(tmp_ctx);
207 mpr_Return(eid, mprString(NULL));
211 ret = talloc_strdup(tmp_ctx, list[0]);
215 for (i=1;list[i];i++) {
216 ret = talloc_asprintf_append(ret, "%s%s", separator, list[i]);
221 mpr_Return(eid, mprString(ret));
222 talloc_free(tmp_ctx);
225 ejsSetErrorMsg(eid, "out of memory");
231 blergh, C certainly makes this hard!
233 str = sprintf("i=%d s=%7s", 7, "foo");
235 static int ejs_sprintf(MprVarHandle eid, int argc, struct MprVar **argv)
241 char *(*_asprintf_append)(char *, const char *, ...);
243 if (argc < 1 || argv[0]->type != MPR_TYPE_STRING) {
244 ejsSetErrorMsg(eid, "sprintf invalid arguments");
247 format = mprToString(argv[0]);
248 tmp_ctx = talloc_new(mprMemCtx());
249 ret = talloc_strdup(tmp_ctx, "");
251 /* avoid all the format string warnings */
252 _asprintf_append = talloc_asprintf_append;
257 while ((p = strchr(format, '%'))) {
259 int len, len_count=0;
261 ret = talloc_asprintf_append(ret, "%*.*s",
262 (int)(p-format), (int)(p-format),
264 if (ret == NULL) goto failed;
265 format += (int)(p-format);
266 len = strcspn(p+1, "dxuiofgGpXeEFcs%") + 1;
267 fmt2 = talloc_strndup(tmp_ctx, p, len+1);
268 if (fmt2 == NULL) goto failed;
269 len_count = count_chars(fmt2, '*');
270 /* find the type string */
272 while (tstr > fmt2 && isalpha((unsigned char)tstr[-1])) {
275 if (strcmp(tstr, "%") == 0) {
276 ret = talloc_asprintf_append(ret, "%%");
284 argc < a + len_count + 1) {
285 ejsSetErrorMsg(eid, "sprintf: not enough arguments for format");
288 #define FMT_ARG(fn, type) do { \
289 switch (len_count) { \
291 ret = _asprintf_append(ret, fmt2, \
292 (type)fn(argv[a])); \
295 ret = _asprintf_append(ret, fmt2, \
296 (int)mprVarToNumber(argv[a]), \
297 (type)fn(argv[a+1])); \
300 ret = _asprintf_append(ret, fmt2, \
301 (int)mprVarToNumber(argv[a]), \
302 (int)mprVarToNumber(argv[a+1]), \
303 (type)fn(argv[a+2])); \
306 a += len_count + 1; \
312 if (strcmp(tstr, "s")==0) FMT_ARG(mprToString, const char *);
313 else if (strcmp(tstr, "c")==0) FMT_ARG(*mprToString, char);
314 else if (strcmp(tstr, "d")==0) FMT_ARG(mprVarToNumber, int);
315 else if (strcmp(tstr, "ld")==0) FMT_ARG(mprVarToNumber, long);
316 else if (strcmp(tstr, "lld")==0) FMT_ARG(mprVarToNumber, long long);
317 else if (strcmp(tstr, "x")==0) FMT_ARG(mprVarToNumber, int);
318 else if (strcmp(tstr, "lx")==0) FMT_ARG(mprVarToNumber, long);
319 else if (strcmp(tstr, "llx")==0) FMT_ARG(mprVarToNumber, long long);
320 else if (strcmp(tstr, "X")==0) FMT_ARG(mprVarToNumber, int);
321 else if (strcmp(tstr, "lX")==0) FMT_ARG(mprVarToNumber, long);
322 else if (strcmp(tstr, "llX")==0) FMT_ARG(mprVarToNumber, long long);
323 else if (strcmp(tstr, "u")==0) FMT_ARG(mprVarToNumber, int);
324 else if (strcmp(tstr, "lu")==0) FMT_ARG(mprVarToNumber, long);
325 else if (strcmp(tstr, "llu")==0) FMT_ARG(mprVarToNumber, long long);
326 else if (strcmp(tstr, "i")==0) FMT_ARG(mprVarToNumber, int);
327 else if (strcmp(tstr, "li")==0) FMT_ARG(mprVarToNumber, long);
328 else if (strcmp(tstr, "lli")==0) FMT_ARG(mprVarToNumber, long long);
329 else if (strcmp(tstr, "o")==0) FMT_ARG(mprVarToNumber, int);
330 else if (strcmp(tstr, "lo")==0) FMT_ARG(mprVarToNumber, long);
331 else if (strcmp(tstr, "llo")==0) FMT_ARG(mprVarToNumber, long long);
332 else if (strcmp(tstr, "f")==0) FMT_ARG(mprVarToFloat, double);
333 else if (strcmp(tstr, "lf")==0) FMT_ARG(mprVarToFloat, double);
334 else if (strcmp(tstr, "g")==0) FMT_ARG(mprVarToFloat, double);
335 else if (strcmp(tstr, "lg")==0) FMT_ARG(mprVarToFloat, double);
336 else if (strcmp(tstr, "e")==0) FMT_ARG(mprVarToFloat, double);
337 else if (strcmp(tstr, "le")==0) FMT_ARG(mprVarToFloat, double);
338 else if (strcmp(tstr, "E")==0) FMT_ARG(mprVarToFloat, double);
339 else if (strcmp(tstr, "lE")==0) FMT_ARG(mprVarToFloat, double);
340 else if (strcmp(tstr, "F")==0) FMT_ARG(mprVarToFloat, double);
341 else if (strcmp(tstr, "lF")==0) FMT_ARG(mprVarToFloat, double);
343 ejsSetErrorMsg(eid, "sprintf: unknown format string '%s'", fmt2);
349 ret = talloc_asprintf_append(ret, "%s", format);
350 mpr_Return(eid, mprString(ret));
351 talloc_free(tmp_ctx);
355 talloc_free(tmp_ctx);
360 used to build your own print function
361 str = vsprintf(args);
363 static int ejs_vsprintf(MprVarHandle eid, int argc, struct MprVar **argv)
365 struct MprVar **args, *len, *v;
367 if (argc != 1 || argv[0]->type != MPR_TYPE_OBJECT) {
368 ejsSetErrorMsg(eid, "vsprintf invalid arguments");
372 len = mprGetProperty(v, "length", NULL);
374 ejsSetErrorMsg(eid, "vsprintf takes an array");
377 length = mprToInt(len);
378 args = talloc_array(mprMemCtx(), struct MprVar *, length);
383 for (i=0;i<length;i++) {
385 mprItoa(i, idx, sizeof(idx));
386 args[i] = mprGetProperty(v, idx, NULL);
389 ret = ejs_sprintf(eid, length, args);
396 encode a string, replacing all non-alpha with %02x form
398 static int ejs_encodeURIComponent(MprVarHandle eid, int argc, char **argv)
404 ejsSetErrorMsg(eid, "encodeURIComponent invalid arguments");
411 if (!isalnum(s[i])) count++;
414 ret = talloc_size(mprMemCtx(), i + count*2 + 1);
418 for (i=j=0;s[i];i++,j++) {
419 if (!isalnum(s[i])) {
420 snprintf(ret+j, 4, "%%%02X", (unsigned)s[i]);
427 mpr_Return(eid, mprString(ret));
433 encode a string, replacing all non-alpha of %02x form
435 static int ejs_decodeURIComponent(MprVarHandle eid, int argc, char **argv)
441 ejsSetErrorMsg(eid, "decodeURIComponent invalid arguments");
447 ret = talloc_size(mprMemCtx(), strlen(s) + 1);
452 for (i=j=0;s[i];i++,j++) {
455 if (sscanf(s+i+1, "%02X", &c) != 1) {
456 ejsSetErrorMsg(eid, "decodeURIComponent bad format");
464 if (!isalnum(s[i])) count++;
468 mpr_Return(eid, mprString(ret));
474 initialise string ejs subsystem
476 static int ejs_string_init(MprVarHandle eid, int argc, struct MprVar **argv)
478 struct MprVar *obj = mprInitObject(eid, "string", argc, argv);
480 mprSetCFunction(obj, "substr", ejs_substr);
481 mprSetStringCFunction(obj, "strlen", ejs_strlen);
482 mprSetStringCFunction(obj, "strlower", ejs_strlower);
483 mprSetStringCFunction(obj, "strupper", ejs_strupper);
484 mprSetStringCFunction(obj, "strstr", ejs_strstr);
485 mprSetStringCFunction(obj, "split", ejs_split);
486 mprSetCFunction(obj, "join", ejs_join);
487 mprSetCFunction(obj, "sprintf", ejs_sprintf);
488 mprSetCFunction(obj, "vsprintf", ejs_vsprintf);
489 mprSetStringCFunction(obj, "encodeURIComponent", ejs_encodeURIComponent);
490 mprSetStringCFunction(obj, "decodeURIComponent", ejs_decodeURIComponent);
496 setup C functions that be called from ejs
498 void smb_setup_ejs_string(void)
500 ejsDefineCFunction(-1, "string_init", ejs_string_init, NULL, MPR_VAR_SCRIPT_HANDLE);