diff options
Diffstat (limited to 'qemu/roms/u-boot/common/env_attr.c')
| -rw-r--r-- | qemu/roms/u-boot/common/env_attr.c | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/qemu/roms/u-boot/common/env_attr.c b/qemu/roms/u-boot/common/env_attr.c deleted file mode 100644 index 64baca5a1..000000000 --- a/qemu/roms/u-boot/common/env_attr.c +++ /dev/null @@ -1,213 +0,0 @@ -/* - * (C) Copyright 2012 - * Joe Hershberger, National Instruments, joe.hershberger@ni.com - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#ifdef USE_HOSTCC /* Eliminate "ANSI does not permit..." warnings */ -#include <stdint.h> -#include <stdio.h> -#include <linux/linux_string.h> -#else -#include <common.h> -#endif - -#include <env_attr.h> -#include <errno.h> -#include <linux/string.h> -#include <malloc.h> - -/* - * Iterate through the whole list calling the callback for each found element. - * "attr_list" takes the form: - * attributes = [^,:\s]* - * entry = name[:attributes] - * list = entry[,list] - */ -int env_attr_walk(const char *attr_list, - int (*callback)(const char *name, const char *attributes)) -{ - const char *entry, *entry_end; - char *name, *attributes; - - if (!attr_list) - /* list not found */ - return 1; - - entry = attr_list; - do { - char *entry_cpy = NULL; - - entry_end = strchr(entry, ENV_ATTR_LIST_DELIM); - /* check if this is the last entry in the list */ - if (entry_end == NULL) { - int entry_len = strlen(entry); - - if (entry_len) { - /* - * allocate memory to copy the entry into since - * we will need to inject '\0' chars and squash - * white-space before calling the callback - */ - entry_cpy = malloc(entry_len + 1); - if (entry_cpy) - /* copy the rest of the list */ - strcpy(entry_cpy, entry); - else - return -ENOMEM; - } - } else { - int entry_len = entry_end - entry; - - if (entry_len) { - /* - * allocate memory to copy the entry into since - * we will need to inject '\0' chars and squash - * white-space before calling the callback - */ - entry_cpy = malloc(entry_len + 1); - if (entry_cpy) { - /* copy just this entry and null term */ - strncpy(entry_cpy, entry, entry_len); - entry_cpy[entry_len] = '\0'; - } else - return -ENOMEM; - } - } - - /* check if there is anything to process (e.g. not ",,,") */ - if (entry_cpy != NULL) { - attributes = strchr(entry_cpy, ENV_ATTR_SEP); - /* check if there is a ':' */ - if (attributes != NULL) { - /* replace the ':' with '\0' to term name */ - *attributes++ = '\0'; - /* remove white-space from attributes */ - attributes = strim(attributes); - } - /* remove white-space from name */ - name = strim(entry_cpy); - - /* only call the callback if there is a name */ - if (strlen(name) != 0) { - int retval = 0; - - retval = callback(name, attributes); - if (retval) { - free(entry_cpy); - return retval; - } - } - } - - free(entry_cpy); - entry = entry_end + 1; - } while (entry_end != NULL); - - return 0; -} - -/* - * Search for the last matching string in another string with the option to - * start looking at a certain point (i.e. ignore anything beyond that point). - */ -static char *reverse_strstr(const char *searched, const char *search_for, - const char *searched_start) -{ - char *result = NULL; - - if (*search_for == '\0') - return (char *)searched; - - for (;;) { - char *match = strstr(searched, search_for); - - /* - * Stop looking if no new match is found or looking past the - * searched_start pointer - */ - if (match == NULL || (searched_start != NULL && - match + strlen(search_for) > searched_start)) - break; - - result = match; - searched = match + 1; - } - - return result; -} - -/* - * Retrieve the attributes string associated with a single name in the list - * There is no protection on attributes being too small for the value - */ -int env_attr_lookup(const char *attr_list, const char *name, char *attributes) -{ - const char *entry = NULL; - - if (!attributes) - /* bad parameter */ - return -1; - if (!attr_list) - /* list not found */ - return 1; - - entry = reverse_strstr(attr_list, name, NULL); - while (entry != NULL) { - const char *prevch = entry - 1; - const char *nextch = entry + strlen(name); - - /* Skip spaces */ - while (*prevch == ' ') - prevch--; - while (*nextch == ' ') - nextch++; - - /* check for an exact match */ - if ((entry == attr_list || - *prevch == ENV_ATTR_LIST_DELIM) && - (*nextch == ENV_ATTR_SEP || - *nextch == ENV_ATTR_LIST_DELIM || - *nextch == '\0')) - break; - - entry = reverse_strstr(attr_list, name, entry); - } - if (entry != NULL) { - int len; - - /* skip the name */ - entry += strlen(name); - /* skip spaces */ - while (*entry == ' ') - entry++; - if (*entry != ENV_ATTR_SEP) - len = 0; - else { - const char *delim; - static const char delims[] = { - ENV_ATTR_LIST_DELIM, ' ', '\0'}; - - /* skip the attr sep */ - entry += 1; - /* skip spaces */ - while (*entry == ' ') - entry++; - - delim = strpbrk(entry, delims); - if (delim == NULL) - len = strlen(entry); - else - len = delim - entry; - memcpy(attributes, entry, len); - } - attributes[len] = '\0'; - - /* success */ - return 0; - } - - /* not found in list */ - return 2; -} |