2 * Copyright 2011 The Chromium Authors, All Rights Reserved.
3 * Copyright 2008 Jon Loeliger, Freescale Semiconductor, Inc.
5 * util_is_printable_string contributed by
6 * Pantelis Antoniou <pantelis.antoniou AT gmail.com>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of the
11 * License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
38 char *xstrdup(const char *s)
40 int len = strlen(s) + 1;
41 char *dup = xmalloc(len);
48 char *join_path(const char *path, const char *name)
50 int lenp = strlen(path);
51 int lenn = strlen(name);
56 len = lenp + lenn + 2;
57 if ((lenp > 0) && (path[lenp-1] == '/')) {
63 memcpy(str, path, lenp);
68 memcpy(str+lenp, name, lenn+1);
72 int util_is_printable_string(const void *data, int len)
77 /* zero length is not */
81 /* must terminate with zero */
82 if (s[len - 1] != '\0')
86 while (*s && isprint(*s))
89 /* not zero, or not done yet */
90 if (*s != '\0' || (s + 1 - ss) < len)
97 * Parse a octal encoded character starting at index i in string s. The
98 * resulting character will be returned and the index i will be updated to
99 * point at the character directly after the end of the encoding, this may be
100 * the '\0' terminator of the string.
102 static char get_oct_char(const char *s, int *i)
109 strncpy(x, s + *i, 3);
111 val = strtol(x, &endx, 8);
120 * Parse a hexadecimal encoded character starting at index i in string s. The
121 * resulting character will be returned and the index i will be updated to
122 * point at the character directly after the end of the encoding, this may be
123 * the '\0' terminator of the string.
125 static char get_hex_char(const char *s, int *i)
132 strncpy(x, s + *i, 2);
134 val = strtol(x, &endx, 16);
136 die("\\x used with no following hex digits\n");
142 char get_escape_char(const char *s, int *i)
179 j--; /* need to re-read the first digit as
180 * part of the octal value */
181 val = get_oct_char(s, &j);
184 val = get_hex_char(s, &j);
194 int utilfdt_read_err(const char *filename, char **buffp)
196 int fd = 0; /* assume stdin */
198 off_t bufsize = 1024, offset = 0;
202 if (strcmp(filename, "-") != 0) {
203 fd = open(filename, O_RDONLY);
208 /* Loop until we have read everything */
209 buf = malloc(bufsize);
211 /* Expand the buffer to hold the next chunk */
212 if (offset == bufsize) {
214 buf = realloc(buf, bufsize);
221 ret = read(fd, &buf[offset], bufsize - offset);
229 /* Clean up, including closing stdin; return errno on error */
238 char *utilfdt_read(const char *filename)
241 int ret = utilfdt_read_err(filename, &buff);
244 fprintf(stderr, "Couldn't open blob from '%s': %s\n", filename,
248 /* Successful read */
252 int utilfdt_write_err(const char *filename, const void *blob)
254 int fd = 1; /* assume stdout */
258 const char *ptr = blob;
260 if (strcmp(filename, "-") != 0) {
261 fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666);
266 totalsize = fdt_totalsize(blob);
269 while (offset < totalsize) {
270 ret = write(fd, ptr + offset, totalsize - offset);
277 /* Close the file/stdin; return errno on error */
280 return ret < 0 ? -ret : 0;
284 int utilfdt_write(const char *filename, const void *blob)
286 int ret = utilfdt_write_err(filename, blob);
289 fprintf(stderr, "Couldn't write blob to '%s': %s\n", filename,
295 int utilfdt_decode_type(const char *fmt, int *type, int *size)
302 /* get the conversion qualifier */
304 if (strchr("hlLb", *fmt)) {
306 if (qualifier == *fmt) {
308 /* TODO: case 'l': qualifier = 'L'; break;*/
316 /* we should now have a type */
317 if ((*fmt == '\0') || !strchr("iuxs", *fmt))
320 /* convert qualifier (bhL) to byte size */
322 *size = qualifier == 'b' ? 1 :
323 qualifier == 'h' ? 2 :
324 qualifier == 'l' ? 4 : -1;
327 /* that should be it! */