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parse.c
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parse.c
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#include "parse.h"
#include "externs.h"
#include "retriever/retriever.h"
#include "support/gutils.h"
#include "structure/necessary.h"
#include "config.h"
// definitions
#define OPT_FULL "-f"
#define OPT_FULL_FULL "--full"
#define OPT_INCREMENTS "-r"
#define OPT_INCREMENTS_FULL "--revisions"
#define OPT_CACHING "-c"
#define OPT_CACHING_FULL "--caching"
#define OPT_DIR "-d"
#define OPT_DIR_FULL "--directory"
#define OPT_DEBUG_FULL "--debug"
#define OPT_LAST "-l"
#define OPT_LAST_FULL "--last"
#define OPT_VERSION "-v"
#define OPT_VERSION_FULL "--version"
#define OPT_FUSE "-o"
#define OPT_DIR_LOCAL_TIME_FULL "--local-time"
#define isOption(string) ((string[0] == '-') ? 1 : 0)
// private functions
int set_caching(int argc, char **argv, int *index){
if ((*index + 1 >= argc) || (isOption(argv[*index + 1]) == 1))
return -1;
cache_limit = atoi(argv[*index + 1]);
if (cache_limit < 0)
return -1;
*index += 1;
return 0;
};
int set_increments(int argc, char **argv, int *index){
if ((*index + 1 >= argc) || (isOption(argv[*index + 1]) == 1))
return -1;
necessary_limit = atoi(argv[*index + 1]);
if (cache_limit < 0)
return -1;
*index += 1;
return 0;
};
int set_debug_level(int argc, char **argv, int *index){
if ((*index + 1 >= argc) || (isOption(argv[*index + 1]) == 1))
return -1;
debug = 1;
debug_level = atoi(argv[*index + 1]);
*index += 1;
return 0;
}
int set_directory(int argc, char **argv, int *index){
#define set_directory_finish(value) { \
if (temp != NULL) \
free(temp); \
return value; \
}
struct stat *temp = NULL;
if ((*index + 1 >= argc) || (isOption(argv[*index + 1]) == 1))
set_directory_finish(-1);
temp = single(struct stat);
if ((stat(argv[*index + 1], temp) != 0) || ((temp->st_mode & S_IFDIR) == 0))
set_directory_finish(-1);
*index += 1;
if (gstrcpy(&tmp_dir, argv[*index]) != 0)
set_directory_finish(-1);
set_directory_finish(0);
};
int add_fuse_option(int argc, char **argv, int *index){
if ((*index + 1 >= argc) || (isOption(argv[*index + 1]) == 1))
return -1;
if (gmstrcpy(&fuse_options, "-o", argv[*index + 1], NULL))
return -1;
*index += 1;
return 0;
};
void parse_option(struct file_system_info *fsinfo, int argc, char **argv, int *index){
if ((strcmp(argv[*index], OPT_INCREMENTS) == 0) || (strcmp(argv[*index], OPT_INCREMENTS_FULL) == 0)){
if (set_increments(argc, argv, index) != 0)
fail(ERR_PARAMETRES);
}
else if ((strcmp(argv[*index], OPT_FULL) == 0) || (strcmp(argv[*index], OPT_FULL_FULL) == 0))
structure = STRUCTURE_FULL;
else if ((strcmp(argv[*index], OPT_LAST) == 0) || (strcmp(argv[*index], OPT_LAST_FULL) == 0)) {
layout = LAYOUT_LAST;
structure = STRUCTURE_FULL;
}
else if ((strcmp(argv[*index], OPT_CACHING) == 0) || (strcmp(argv[*index], OPT_CACHING_FULL) == 0)){
if (set_caching(argc, argv, index) != 0)
fail(ERR_PARAMETRES);
}
else if ((strcmp(argv[*index], OPT_DIR) == 0) || (strcmp(argv[*index], OPT_DIR_FULL) == 0)){
if (set_directory(argc, argv, index) != 0)
fail(ERR_PARAMETRES);
}
else if ((strcmp(argv[*index], OPT_VERSION) == 0) || (strcmp(argv[*index], OPT_VERSION_FULL) == 0)) {
printf(PROGRAM_NAME " - filesystem in userspace for rdiff-backup repositories; version %s\n", PACKAGE_VERSION);
exit(0);
}
else if (strcmp(argv[*index], OPT_DEBUG_FULL) == 0) {
if (set_debug_level(argc, argv, index) != 0)
fail(ERR_PARAMETRES);
}
else if (strcmp(argv[*index], OPT_FUSE) == 0) {
if (add_fuse_option(argc, argv, index) != 0)
fail(ERR_PARAMETRES);
}
else if (strcmp(argv[*index], OPT_DIR_LOCAL_TIME_FULL) == 0)
fsinfo->rev_dir_time = REV_LOCAL_TIME;
else
fail(ERR_UNKNOWN_OPTION);
};
void parse_repo(struct file_system_info *fsinfo, int argc, char** argv, int *index){
int i = 0;
if (fsinfo->repo_count != 0)
fail(ERR_PARAMETRES);
for (i = *index; (i < argc) && (!isOption(argv[i])); i++){ };
fsinfo->repo_count = i - *index;
fsinfo->repos = calloc(fsinfo->repo_count, sizeof(char *));
for (i = *index; (i < argc) && (!isOption(argv[i])); i++)
gstrcpy(&fsinfo->repos[i - *index], argv[i]);
*index += fsinfo->repo_count - 1;
};
void parse_mount(char *arg){
if (mount != NULL)
fail(ERR_PARAMETRES);
if (gstrcpy(&mount, arg) != 0)
fail(-1);
};
// public functions
int parse(struct file_system_info *fsinfo, int argc, char **argv){
int i = 0;
if ((argc == 2) && ((strcmp(argv[1], OPT_VERSION) == 0) || (strcmp(argv[1], OPT_VERSION_FULL) == 0))){
printf(PROGRAM_NAME " - filesystem in userspace for rdiff-backup repositories; version %s\n", PACKAGE_VERSION);
exit(0);
};
if (argc < 3)
fail(ERR_PARAMETRES);
for (i = 1; i < argc; i++){
if (isOption(argv[i]) == 1)
parse_option(fsinfo, argc, argv, &i);
else if (mount == NULL)
parse_mount(argv[i]);
else
parse_repo(fsinfo, argc, argv, &i);
};
if (mount == NULL)
fail(ERR_NO_MOUNT);
if (fsinfo->repo_count == 0)
fail(ERR_NO_REPO);
if ((layout == LAYOUT_LAST) && (structure != STRUCTURE_FULL))
fail(ERR_FULL_ONLY);
return 0;
};