From 055c52583a2794da8ba1e85a48cce3832372b12f Mon Sep 17 00:00:00 2001 From: Luca Boccassi Date: Wed, 8 Nov 2017 14:15:11 +0000 Subject: New upstream version 17.11-rc3 Change-Id: I6a5baa40612fe0c20f30b5fa773a6cbbac63a685 Signed-off-by: Luca Boccassi --- lib/librte_cfgfile/rte_cfgfile.c | 441 +++++++++++++++++++++++++-------------- 1 file changed, 281 insertions(+), 160 deletions(-) (limited to 'lib/librte_cfgfile/rte_cfgfile.c') diff --git a/lib/librte_cfgfile/rte_cfgfile.c b/lib/librte_cfgfile/rte_cfgfile.c index b54a523d..eacf93a8 100644 --- a/lib/librte_cfgfile/rte_cfgfile.c +++ b/lib/librte_cfgfile/rte_cfgfile.c @@ -35,21 +35,23 @@ #include #include #include +#include #include -#include #include "rte_cfgfile.h" struct rte_cfgfile_section { char name[CFG_NAME_LEN]; int num_entries; - struct rte_cfgfile_entry *entries[0]; + int allocated_entries; + struct rte_cfgfile_entry *entries; }; struct rte_cfgfile { int flags; int num_sections; - struct rte_cfgfile_section *sections[0]; + int allocated_sections; + struct rte_cfgfile_section *sections; }; /** when we resize a file structure, how many extra entries @@ -105,6 +107,49 @@ _strip(char *str, unsigned len) return newlen; } +static struct rte_cfgfile_section * +_get_section(struct rte_cfgfile *cfg, const char *sectionname) +{ + int i; + + for (i = 0; i < cfg->num_sections; i++) { + if (strncmp(cfg->sections[i].name, sectionname, + sizeof(cfg->sections[0].name)) == 0) + return &cfg->sections[i]; + } + return NULL; +} + +static int +_add_entry(struct rte_cfgfile_section *section, const char *entryname, + const char *entryvalue) +{ + /* resize entry structure if we don't have room for more entries */ + if (section->num_entries == section->allocated_entries) { + struct rte_cfgfile_entry *n_entries = realloc( + section->entries, + sizeof(struct rte_cfgfile_entry) * + ((section->allocated_entries) + + CFG_ALLOC_ENTRY_BATCH)); + + if (n_entries == NULL) + return -ENOMEM; + + section->entries = n_entries; + section->allocated_entries += CFG_ALLOC_ENTRY_BATCH; + } + /* fill up entry fields with key name and value */ + struct rte_cfgfile_entry *curr_entry = + §ion->entries[section->num_entries]; + + snprintf(curr_entry->name, sizeof(curr_entry->name), "%s", entryname); + snprintf(curr_entry->value, + sizeof(curr_entry->value), "%s", entryvalue); + section->num_entries++; + + return 0; +} + static int rte_cfgfile_check_params(const struct rte_cfgfile_parameters *params) { @@ -144,10 +189,6 @@ struct rte_cfgfile * rte_cfgfile_load_with_params(const char *filename, int flags, const struct rte_cfgfile_parameters *params) { - int allocated_sections = CFG_ALLOC_SECTION_BATCH; - int allocated_entries = 0; - int curr_section = -1; - int curr_entry = -1; char buffer[CFG_NAME_LEN + CFG_VALUE_LEN + 4] = {0}; int lineno = 0; struct rte_cfgfile *cfg = NULL; @@ -159,28 +200,7 @@ rte_cfgfile_load_with_params(const char *filename, int flags, if (f == NULL) return NULL; - cfg = malloc(sizeof(*cfg) + sizeof(cfg->sections[0]) * - allocated_sections); - if (cfg == NULL) - goto error2; - - memset(cfg->sections, 0, sizeof(cfg->sections[0]) * allocated_sections); - - if (flags & CFG_FLAG_GLOBAL_SECTION) { - curr_section = 0; - allocated_entries = CFG_ALLOC_ENTRY_BATCH; - cfg->sections[curr_section] = malloc( - sizeof(*cfg->sections[0]) + - sizeof(cfg->sections[0]->entries[0]) * - allocated_entries); - if (cfg->sections[curr_section] == NULL) { - printf("Error - no memory for global section\n"); - goto error1; - } - - snprintf(cfg->sections[curr_section]->name, - sizeof(cfg->sections[0]->name), "GLOBAL"); - } + cfg = rte_cfgfile_create(flags); while (fgets(buffer, sizeof(buffer), f) != NULL) { char *pos = NULL; @@ -191,13 +211,15 @@ rte_cfgfile_load_with_params(const char *filename, int flags, "Check if line too long\n", lineno); goto error1; } + /* skip parsing if comment character found */ pos = memchr(buffer, params->comment_character, len); - if (pos != NULL) { + if (pos != NULL && (*(pos-1) != '\\')) { *pos = '\0'; len = pos - buffer; } len = _strip(buffer, len); + /* skip lines without useful content */ if (buffer[0] != '[' && memchr(buffer, '=', len) == NULL) continue; @@ -205,151 +227,252 @@ rte_cfgfile_load_with_params(const char *filename, int flags, /* section heading line */ char *end = memchr(buffer, ']', len); if (end == NULL) { - printf("Error line %d - no terminating '['" + printf("Error line %d - no terminating ']'" "character found\n", lineno); goto error1; } *end = '\0'; _strip(&buffer[1], end - &buffer[1]); - /* close off old section and add start new one */ - if (curr_section >= 0) - cfg->sections[curr_section]->num_entries = - curr_entry + 1; - curr_section++; - - /* resize overall struct if we don't have room for more - sections */ - if (curr_section == allocated_sections) { - allocated_sections += CFG_ALLOC_SECTION_BATCH; - struct rte_cfgfile *n_cfg = realloc(cfg, - sizeof(*cfg) + sizeof(cfg->sections[0]) - * allocated_sections); - if (n_cfg == NULL) { - curr_section--; - printf("Error - no more memory\n"); - goto error1; - } - cfg = n_cfg; - } - - /* allocate space for new section */ - allocated_entries = CFG_ALLOC_ENTRY_BATCH; - curr_entry = -1; - cfg->sections[curr_section] = malloc( - sizeof(*cfg->sections[0]) + - sizeof(cfg->sections[0]->entries[0]) * - allocated_entries); - if (cfg->sections[curr_section] == NULL) { - printf("Error - no more memory\n"); - goto error1; - } - - snprintf(cfg->sections[curr_section]->name, - sizeof(cfg->sections[0]->name), - "%s", &buffer[1]); + rte_cfgfile_add_section(cfg, &buffer[1]); } else { - /* value line */ - if (curr_section < 0) { - printf("Error line %d - value outside of" - "section\n", lineno); + /* key and value line */ + char *split[2] = {NULL}; + + split[0] = buffer; + split[1] = memchr(buffer, '=', len); + if (split[1] == NULL) { + printf("Error line %d - no '='" + "character found\n", lineno); goto error1; } - - struct rte_cfgfile_section *sect = - cfg->sections[curr_section]; - int n; - char *split[2] = {NULL}; - n = rte_strsplit(buffer, sizeof(buffer), split, 2, '='); - if (flags & CFG_FLAG_EMPTY_VALUES) { - if ((n < 1) || (n > 2)) { - printf("Error at line %d - cannot split string, n=%d\n", - lineno, n); - goto error1; - } - } else { - if (n != 2) { - printf("Error at line %d - cannot split string, n=%d\n", - lineno, n); - goto error1; - } + *split[1] = '\0'; + split[1]++; + + _strip(split[0], strlen(split[0])); + _strip(split[1], strlen(split[1])); + char *end = memchr(split[1], '\\', strlen(split[1])); + + while (end != NULL) { + if (*(end+1) == params->comment_character) { + *end = '\0'; + strcat(split[1], end+1); + } else + end++; + end = memchr(end, '\\', strlen(end)); } - curr_entry++; - if (curr_entry == allocated_entries) { - allocated_entries += CFG_ALLOC_ENTRY_BATCH; - struct rte_cfgfile_section *n_sect = realloc( - sect, sizeof(*sect) + - sizeof(sect->entries[0]) * - allocated_entries); - if (n_sect == NULL) { - curr_entry--; - printf("Error - no more memory\n"); - goto error1; - } - sect = cfg->sections[curr_section] = n_sect; + if (!(flags & CFG_FLAG_EMPTY_VALUES) && + (*split[1] == '\0')) { + printf("Error at line %d - cannot use empty " + "values\n", lineno); + goto error1; } - sect->entries[curr_entry] = malloc( - sizeof(*sect->entries[0])); - if (sect->entries[curr_entry] == NULL) { - printf("Error - no more memory\n"); + if (cfg->num_sections == 0) goto error1; - } - struct rte_cfgfile_entry *entry = sect->entries[ - curr_entry]; - snprintf(entry->name, sizeof(entry->name), "%s", - split[0]); - snprintf(entry->value, sizeof(entry->value), "%s", - split[1] ? split[1] : ""); - _strip(entry->name, strnlen(entry->name, - sizeof(entry->name))); - _strip(entry->value, strnlen(entry->value, - sizeof(entry->value))); + _add_entry(&cfg->sections[cfg->num_sections - 1], + split[0], split[1]); } } fclose(f); - cfg->flags = flags; - cfg->num_sections = curr_section + 1; - /* curr_section will still be -1 if we have an empty file */ - if (curr_section >= 0) - cfg->sections[curr_section]->num_entries = curr_entry + 1; return cfg; - error1: - cfg->num_sections = curr_section + 1; - if (curr_section >= 0) - cfg->sections[curr_section]->num_entries = curr_entry + 1; rte_cfgfile_close(cfg); -error2: fclose(f); return NULL; } +struct rte_cfgfile * +rte_cfgfile_create(int flags) +{ + int i; + struct rte_cfgfile *cfg = NULL; -int rte_cfgfile_close(struct rte_cfgfile *cfg) + cfg = malloc(sizeof(*cfg)); + + if (cfg == NULL) + return NULL; + + cfg->flags = flags; + cfg->num_sections = 0; + + /* allocate first batch of sections and entries */ + cfg->sections = malloc(sizeof(struct rte_cfgfile_section) * + CFG_ALLOC_SECTION_BATCH); + + if (cfg->sections == NULL) + goto error1; + + cfg->allocated_sections = CFG_ALLOC_SECTION_BATCH; + + for (i = 0; i < CFG_ALLOC_SECTION_BATCH; i++) { + cfg->sections[i].entries = malloc(sizeof( + struct rte_cfgfile_entry) * CFG_ALLOC_ENTRY_BATCH); + + if (cfg->sections[i].entries == NULL) + goto error1; + + cfg->sections[i].num_entries = 0; + cfg->sections[i].allocated_entries = CFG_ALLOC_ENTRY_BATCH; + } + + if (flags & CFG_FLAG_GLOBAL_SECTION) + rte_cfgfile_add_section(cfg, "GLOBAL"); + + return cfg; +error1: + if (cfg->sections != NULL) { + for (i = 0; i < cfg->allocated_sections; i++) { + if (cfg->sections[i].entries != NULL) { + free(cfg->sections[i].entries); + cfg->sections[i].entries = NULL; + } + } + free(cfg->sections); + cfg->sections = NULL; + } + free(cfg); + return NULL; +} + +int +rte_cfgfile_add_section(struct rte_cfgfile *cfg, const char *sectionname) +{ + int i; + + if (cfg == NULL) + return -EINVAL; + + if (sectionname == NULL) + return -EINVAL; + + /* resize overall struct if we don't have room for more sections */ + if (cfg->num_sections == cfg->allocated_sections) { + + struct rte_cfgfile_section *n_sections = + realloc(cfg->sections, + sizeof(struct rte_cfgfile_section) * + ((cfg->allocated_sections) + + CFG_ALLOC_SECTION_BATCH)); + + if (n_sections == NULL) + return -ENOMEM; + + for (i = 0; i < CFG_ALLOC_SECTION_BATCH; i++) { + n_sections[i + cfg->allocated_sections].num_entries = 0; + n_sections[i + + cfg->allocated_sections].allocated_entries = 0; + n_sections[i + cfg->allocated_sections].entries = NULL; + } + cfg->sections = n_sections; + cfg->allocated_sections += CFG_ALLOC_SECTION_BATCH; + } + + snprintf(cfg->sections[cfg->num_sections].name, + sizeof(cfg->sections[0].name), "%s", sectionname); + cfg->sections[cfg->num_sections].num_entries = 0; + cfg->num_sections++; + + return 0; +} + +int rte_cfgfile_add_entry(struct rte_cfgfile *cfg, + const char *sectionname, const char *entryname, + const char *entryvalue) +{ + int ret; + + if ((cfg == NULL) || (sectionname == NULL) || (entryname == NULL) + || (entryvalue == NULL)) + return -EINVAL; + + if (rte_cfgfile_has_entry(cfg, sectionname, entryname) != 0) + return -EEXIST; + + /* search for section pointer by sectionname */ + struct rte_cfgfile_section *curr_section = _get_section(cfg, + sectionname); + if (curr_section == NULL) + return -EINVAL; + + ret = _add_entry(curr_section, entryname, entryvalue); + + return ret; +} + +int rte_cfgfile_set_entry(struct rte_cfgfile *cfg, const char *sectionname, + const char *entryname, const char *entryvalue) +{ + int i; + + if ((cfg == NULL) || (sectionname == NULL) || (entryname == NULL)) + return -EINVAL; + + /* search for section pointer by sectionname */ + struct rte_cfgfile_section *curr_section = _get_section(cfg, + sectionname); + if (curr_section == NULL) + return -EINVAL; + + if (entryvalue == NULL) + entryvalue = ""; + + for (i = 0; i < curr_section->num_entries; i++) + if (!strcmp(curr_section->entries[i].name, entryname)) { + snprintf(curr_section->entries[i].value, + sizeof(curr_section->entries[i].value), + "%s", entryvalue); + return 0; + } + printf("Error - entry name doesn't exist\n"); + return -EINVAL; +} + +int rte_cfgfile_save(struct rte_cfgfile *cfg, const char *filename) { int i, j; + if ((cfg == NULL) || (filename == NULL)) + return -EINVAL; + + FILE *f = fopen(filename, "w"); + + if (f == NULL) + return -EINVAL; + + for (i = 0; i < cfg->num_sections; i++) { + fprintf(f, "[%s]\n", cfg->sections[i].name); + + for (j = 0; j < cfg->sections[i].num_entries; j++) { + fprintf(f, "%s=%s\n", + cfg->sections[i].entries[j].name, + cfg->sections[i].entries[j].value); + } + } + return fclose(f); +} + +int rte_cfgfile_close(struct rte_cfgfile *cfg) +{ + int i; + if (cfg == NULL) return -1; - for (i = 0; i < cfg->num_sections; i++) { - if (cfg->sections[i] != NULL) { - if (cfg->sections[i]->num_entries) { - for (j = 0; j < cfg->sections[i]->num_entries; - j++) { - if (cfg->sections[i]->entries[j] != - NULL) - free(cfg->sections[i]-> - entries[j]); - } + if (cfg->sections != NULL) { + for (i = 0; i < cfg->allocated_sections; i++) { + if (cfg->sections[i].entries != NULL) { + free(cfg->sections[i].entries); + cfg->sections[i].entries = NULL; } - free(cfg->sections[i]); } + free(cfg->sections); + cfg->sections = NULL; } free(cfg); + cfg = NULL; return 0; } @@ -361,7 +484,7 @@ size_t length) int i; int num_sections = 0; for (i = 0; i < cfg->num_sections; i++) { - if (strncmp(cfg->sections[i]->name, sectionname, length) == 0) + if (strncmp(cfg->sections[i].name, sectionname, length) == 0) num_sections++; } return num_sections; @@ -375,23 +498,11 @@ rte_cfgfile_sections(struct rte_cfgfile *cfg, char *sections[], for (i = 0; i < cfg->num_sections && i < max_sections; i++) snprintf(sections[i], CFG_NAME_LEN, "%s", - cfg->sections[i]->name); + cfg->sections[i].name); return i; } -static const struct rte_cfgfile_section * -_get_section(struct rte_cfgfile *cfg, const char *sectionname) -{ - int i; - for (i = 0; i < cfg->num_sections; i++) { - if (strncmp(cfg->sections[i]->name, sectionname, - sizeof(cfg->sections[0]->name)) == 0) - return cfg->sections[i]; - } - return NULL; -} - int rte_cfgfile_has_section(struct rte_cfgfile *cfg, const char *sectionname) { @@ -408,7 +519,18 @@ rte_cfgfile_section_num_entries(struct rte_cfgfile *cfg, return s->num_entries; } +int +rte_cfgfile_section_num_entries_by_index(struct rte_cfgfile *cfg, + char *sectionname, int index) +{ + if (index < 0 || index >= cfg->num_sections) + return -1; + const struct rte_cfgfile_section *sect = &(cfg->sections[index]); + + snprintf(sectionname, CFG_NAME_LEN, "%s", sect->name); + return sect->num_entries; +} int rte_cfgfile_section_entries(struct rte_cfgfile *cfg, const char *sectionname, struct rte_cfgfile_entry *entries, int max_entries) @@ -418,7 +540,7 @@ rte_cfgfile_section_entries(struct rte_cfgfile *cfg, const char *sectionname, if (sect == NULL) return -1; for (i = 0; i < max_entries && i < sect->num_entries; i++) - entries[i] = *sect->entries[i]; + entries[i] = sect->entries[i]; return i; } @@ -432,11 +554,10 @@ rte_cfgfile_section_entries_by_index(struct rte_cfgfile *cfg, int index, if (index < 0 || index >= cfg->num_sections) return -1; - - sect = cfg->sections[index]; + sect = &cfg->sections[index]; snprintf(sectionname, CFG_NAME_LEN, "%s", sect->name); for (i = 0; i < max_entries && i < sect->num_entries; i++) - entries[i] = *sect->entries[i]; + entries[i] = sect->entries[i]; return i; } @@ -449,9 +570,9 @@ rte_cfgfile_get_entry(struct rte_cfgfile *cfg, const char *sectionname, if (sect == NULL) return NULL; for (i = 0; i < sect->num_entries; i++) - if (strncmp(sect->entries[i]->name, entryname, CFG_NAME_LEN) - == 0) - return sect->entries[i]->value; + if (strncmp(sect->entries[i].name, entryname, CFG_NAME_LEN) + == 0) + return sect->entries[i].value; return NULL; } -- cgit 1.2.3-korg