diff options
| -rw-r--r-- | Makefile | 26 | ||||
| -rw-r--r-- | config.mk | 8 | ||||
| -rw-r--r-- | expac.c | 490 |
3 files changed, 524 insertions, 0 deletions
diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..393e17f --- /dev/null +++ b/Makefile @@ -0,0 +1,26 @@ +include config.mk + +SRC = expac.c +OBJ = ${SRC:.c=.o} + +all: expac + +.c.o: + ${CC} -c ${CFLAGS} $< + +expac: ${OBJ} + ${CC} -o $@ ${OBJ} ${LDFLAGS} + +install: expac + install -D -m755 expac ${DESTDIR}${PREFIX}/bin/expac + +dist: clean + mkdir expac-${VERSION} + cp Makefile expac.c expac-${VERSION} + sed "s/^VERSION = .*/VERSION = ${VERSION}/" config.mk > expac-${VERSION}/config.mk + tar cf - expac-${VERSION} | gzip -9 > expac-${VERSION}.tar.gz + rm -rf expac-${VERSION} + +clean: + $(RM) ${OBJ} expac + diff --git a/config.mk b/config.mk new file mode 100644 index 0000000..a1ed858 --- /dev/null +++ b/config.mk @@ -0,0 +1,8 @@ +# version +VERSION = $(shell git describe --always) + +# compiler flags +CC = c99 +CPPFLAGS = -DVERSION=\"${VERSION}\" +CFLAGS += -g -pedantic -Wall -Wextra ${CPPFLAGS} +LDFLAGS += -lalpm @@ -0,0 +1,490 @@ +#define _GNU_SOURCE +#include <alpm.h> +#include <ctype.h> +#include <getopt.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <stdbool.h> +#include <string.h> + +#define FORMAT_TOKENS "BCDEFGLNOPRSabdfiklmnoprsuv%" +#define ESCAPE_TOKENS "\"\\abefnrtv" + +alpm_list_t *dblist = NULL, *targets = NULL; +pmdb_t *db_local; +int verbose = 0; +const char *format = NULL; +const char *timefmt = NULL; +const char *listdelim = NULL; +const char *delim = NULL; + +typedef const char *(*extractfn)(void*); + +static char *strtrim(char *str) { + char *pch = str; + + if (!str || *str == '\0') { + return(str); + } + + while (isspace((unsigned char)*pch)) { + pch++; + } + if (pch != str) { + memmove(str, pch, (strlen(pch) + 1)); + } + + if (*str == '\0') { + return(str); + } + + pch = (str + (strlen(str) - 1)); + while (isspace((unsigned char)*pch)) { + pch--; + } + *++pch = '\0'; + + return(str); +} + +static int alpm_init() { + int ret = 0; + FILE *fp; + char line[PATH_MAX]; + char *ptr, *section = NULL; + + ret = alpm_initialize(); + if (ret != 0) { + return(ret); + } + + ret = alpm_option_set_root("/"); + if (ret != 0) { + return(ret); + } + + ret = alpm_option_set_dbpath("/var/lib/pacman"); + if (ret != 0) { + return(ret); + } + + db_local = alpm_db_register_local(); + if (!db_local) { + return(1); + } + + fp = fopen("/etc/pacman.conf", "r"); + if (!fp) { + return(1); + } + + while (fgets(line, PATH_MAX, fp)) { + strtrim(line); + + if (strlen(line) == 0 || line[0] == '#') { + continue; + } + if ((ptr = strchr(line, '#'))) { + *ptr = '\0'; + } + + if (line[0] == '[' && line[strlen(line) - 1] == ']') { + ptr = &line[1]; + if (section) { + free(section); + } + + section = strdup(ptr); + section[strlen(section) - 1] = '\0'; + + if (strcmp(section, "options") != 0) { + if (!alpm_db_register_sync(section)) { + ret = 1; + goto finish; + } + } + } else { + char *key; + + key = ptr = line; + strsep(&ptr, "="); + strtrim(key); + strtrim(ptr); + if (strcmp(key, "RootDir") == 0) { + alpm_option_set_root(ptr); + } else if (strcmp(key, "DBPath") == 0) { + alpm_option_set_dbpath(ptr); + } + } + } + +finish: + free(section); + fclose(fp); + return(ret); +} + +static void usage(void) { + fprintf(stderr, "expac %s\n" + "Usage: expac [options] <format> target...\n\n", VERSION); + fprintf(stderr, + " Options:\n" + " -Q, --local search local DB (default)\n" + " -S, --sync search sync DBs\n\n" + " -d, --delim <string> separator used between packages (default: \"\\n\")\n" + " -l, --listdelim <string> separator used between list elements (default: \" \")\n" + " -h, --help display this help and exit\n" + " -t, --timefmt <fmt> date format passed to strftime (default: \"%%c\")\n" + " -v, --verbose show errors while printing\n\n"); +} + +static int parse_options(int argc, char *argv[]) { + int opt, option_index = 0; + + static struct option opts[] = { + {"delim", required_argument, 0, 'd'}, + {"listdelim", required_argument, 0, 'l'}, + {"help", no_argument, 0, 'h'}, + {"local", no_argument, 0, 'Q'}, + {"sync", no_argument, 0, 'S'}, + {"timefmt", required_argument, 0, 't'}, + {"verbose", no_argument, 0, 'v'}, + {0, 0, 0, 0} + }; + + while (-1 != (opt = getopt_long(argc, argv, "l:d:hf:QSt:v", opts, &option_index))) { + switch (opt) { + case 'S': + if (dblist) { + fprintf(stderr, "error: can only select one repo option (use -h for help)\n"); + return(1); + } + dblist = alpm_option_get_syncdbs(); + break; + case 'Q': + if (dblist) { + fprintf(stderr, "error: can only select one repo option (use -h for help)\n"); + return(1); + } + dblist = alpm_list_add(dblist, db_local); + break; + case 'd': + delim = optarg; + break; + case 'l': + listdelim = optarg; + break; + case 'h': + usage(); + return(1); + case 't': + timefmt = optarg; + break; + case 'v': + verbose = 1; + break; + + case '?': + return(1); + default: + return(1); + } + } + + if (optind < argc) { + format = argv[optind++]; + } else { + fprintf(stderr, "error: missing format string (use -h for help)\n"); + return(1); + } + + while (optind < argc) { + targets = alpm_list_add(targets, argv[optind++]); + } + + return(0); +} + +static void print_escaped(const char *delim) { + const char *f; + + for (f = delim; *f != '\0'; f++) { + if (*f == '\\') { + switch (*++f) { + case '\\': + putchar('\\'); + break; + case '"': + putchar('\"'); + break; + case 'a': + putchar('\a'); + break; + case 'b': + putchar('\b'); + break; + case 'e': /* \e is nonstandard */ + putchar('\033'); + break; + case 'n': + putchar('\n'); + break; + case 'r': + putchar('\r'); + break; + case 't': + putchar('\t'); + break; + case 'v': + putchar('\v'); + break; + } + } else { + putchar(*f); + } + } +} + +static void print_list(alpm_list_t *list, extractfn fn, bool shortdeps) { + alpm_list_t *i; + + if (!list) { + if (verbose) { + printf("None"); + } + return; + } + + i = list; + while (1) { + char *item; + + item = fn ? (char*)fn(alpm_list_getdata(i)) : (char*)alpm_list_getdata(i); + + if (shortdeps) { + *(item + strcspn(item, "<>=")) = '\0'; + } + + printf("%s", item); + + if ((i = alpm_list_next(i))) { + print_escaped(listdelim); + } else { + break; + } + } + + return; +} + +static void print_time(time_t timestamp) { + char buffer[64]; + + if (!timestamp) { + if (verbose) { + printf("None"); + } + return; + } + + strftime(&buffer[0], 64, timefmt, localtime(×tamp)); + printf("%s", buffer); +} + +static int print_pkg(alpm_list_t *dblist, const char *p, const char *format) { + alpm_list_t *i; + pmpkg_t *pkg; + const char *f; + char *repo, *pkgname; + + pkgname = repo = (char*)p; + if (strchr(pkgname, '/')) { + strsep(&pkgname, "/"); + } else { + repo = NULL; + } + + for (i = dblist; i; i = alpm_list_next(i)) { + pkg = alpm_db_get_pkg(alpm_list_getdata(i), pkgname); + if (repo && strcmp(repo, alpm_db_get_name(alpm_list_getdata(i))) != 0) { + continue; + } + if (pkg) { + break; + } + } + + if (!pkg) { + if (verbose) { + fprintf(stderr, "error: package `%s' not found\n", pkgname); + } + return(1); + } + + for (f = format; *f != '\0'; f++) { + bool shortdeps = false; + if (*f == '%') { + switch (*++f) { + /* simple attributes */ + case 'f': /* filename */ + printf("%s", alpm_pkg_get_filename(pkg)); + break; + case 'n': /* package name */ + printf("%s", alpm_pkg_get_name(pkg)); + break; + case 'v': /* version */ + printf("%s", alpm_pkg_get_version(pkg)); + break; + case 'd': /* description */ + printf("%s", alpm_pkg_get_desc(pkg)); + break; + case 'u': /* project url */ + printf("%s", alpm_pkg_get_url(pkg)); + break; + case 'p': /* packager name */ + printf("%s", alpm_pkg_get_packager(pkg)); + break; + case 's': /* md5sum */ + printf("%s", alpm_pkg_get_md5sum(pkg)); + break; + case 'a': /* architecutre */ + printf("%s", alpm_pkg_get_arch(pkg)); + break; + case 'i': /* has install scriptlet? */ + printf("%s", alpm_pkg_has_scriptlet(pkg) ? "yes" : "no"); + break; + case 'r': /* repo */ + printf("%s", alpm_db_get_name(alpm_pkg_get_db(pkg))); + break; + + /* times */ + case 'b': /* build date */ + print_time(alpm_pkg_get_builddate(pkg)); + break; + case 'l': /* install date */ + print_time(alpm_pkg_get_installdate(pkg)); + break; + + /* sizes */ + case 'k': /* download size */ + printf("%.2f K", (float)alpm_pkg_get_size(pkg) / 1024.0); + break; + case 'm': /* install size */ + printf("%.2f K", (float)alpm_pkg_get_isize(pkg) / 1024.0); + break; + + /* lists */ + case 'N': /* requiredby */ + print_list(alpm_pkg_compute_requiredby(pkg), NULL, shortdeps); + break; + case 'L': /* licenses */ + print_list(alpm_pkg_get_licenses(pkg), NULL, shortdeps); + break; + case 'G': /* groups */ + print_list(alpm_pkg_get_groups(pkg), NULL, shortdeps); + break; + case 'E': /* depends (shortdeps) */ + print_list(alpm_pkg_get_depends(pkg), (extractfn)alpm_dep_get_name, shortdeps); + break; + case 'D': /* depends */ + print_list(alpm_pkg_get_depends(pkg), (extractfn)alpm_dep_compute_string, shortdeps); + break; + case 'O': /* optdepends */ + print_list(alpm_pkg_get_optdepends(pkg), NULL, shortdeps); + break; + case 'C': /* conflicts */ + print_list(alpm_pkg_get_conflicts(pkg), NULL, shortdeps); + break; + case 'S': /* provides (shortdeps) */ + shortdeps = true; + case 'P': /* provides */ + print_list(alpm_pkg_get_provides(pkg), NULL, shortdeps); + break; + case 'R': /* replaces */ + print_list(alpm_pkg_get_replaces(pkg), NULL, shortdeps); + break; + case 'F': /* files */ + print_list(alpm_pkg_get_files(pkg), NULL, shortdeps); + break; + case 'B': /* backup */ + print_list(alpm_pkg_get_backup(pkg), NULL, shortdeps); + break; + case '%': + putchar('%'); + break; + } + } else if (*f == '\\') { + char buf[3]; + buf[0] = *f; + buf[1] = *++f; + buf[2] = '\0'; + print_escaped(buf); + } else { + putchar(*f); + } + } + + print_escaped(delim); + + return(0); +} + +int verify_format_string(const char *format) { + const char *p; + + for (p = format; *p != '\0'; p++) { + if (*p == '%' && !strchr(FORMAT_TOKENS, *++p)) { + fprintf(stderr, "error: bad token in format string: %%%c\n", *p); + return(1); + } else if (*p == '\\' && !strchr(ESCAPE_TOKENS, *p)) { + fprintf(stderr, "error: bad token in format string: \\%c\n", *p); + return(1); + } + } + + return(0); +} + +int main(int argc, char *argv[]) { + int ret = 0, freelist = 0; + alpm_list_t *i; + + ret = alpm_init(); + if (ret != 0) { + return(1); + } + + ret = parse_options(argc, argv); + if (ret != 0) { + goto finish; + } + + /* default vals */ + if (!dblist) { + dblist = alpm_list_add(dblist, db_local); + freelist = 1; + } + delim = delim ? delim : "\n"; + listdelim = listdelim ? listdelim : " "; + timefmt = timefmt ? timefmt : "%c"; + + if (verify_format_string(format) != 0) { + return(1); + } + + for (i = targets; i; i = alpm_list_next(i)) { + ret += print_pkg(dblist, alpm_list_getdata(i), format); + } + ret = !!ret; + + if (freelist) { + alpm_list_free(dblist); + } + +finish: + alpm_list_free(targets); + alpm_release(); + return(ret); +} + |