Refactor old date parsing into single method

We've managed to duplicate this four times at this point, so make it a
method in util.c instead.

Signed-off-by: Dan McGee <dan@archlinux.org>

lib/libalpm/be_local.c

@@ -28,7 +28,6 @@
 #include <stdint.h> /* intmax_t */
 #include <sys/stat.h>
 #include <dirent.h>
-#include <ctype.h>
 #include <time.h>
 #include <limits.h> /* PATH_MAX */
 #include <locale.h> /* setlocale */
@@ -570,33 +569,13 @@ int _alpm_local_db_read(pmdb_t *db, pmpkg_t *info, pmdbinfrq_t inforeq)
 					goto error;
 				}
 				_alpm_strtrim(line);
-
-				char first = tolower((unsigned char)line[0]);
-				if(first > 'a' && first < 'z') {
-					struct tm tmp_tm = {0}; /* initialize to null in case of failure */
-					setlocale(LC_TIME, "C");
-					strptime(line, "%a %b %e %H:%M:%S %Y", &tmp_tm);
-					info->builddate = mktime(&tmp_tm);
-					setlocale(LC_TIME, "");
-				} else {
-					info->builddate = atol(line);
-				}
+				info->builddate = _alpm_parsedate(line);
 			} else if(strcmp(line, "%INSTALLDATE%") == 0) {
 				if(fgets(line, sizeof(line), fp) == NULL) {
 					goto error;
 				}
 				_alpm_strtrim(line);
-
-				char first = tolower((unsigned char)line[0]);
-				if(first > 'a' && first < 'z') {
-					struct tm tmp_tm = {0}; /* initialize to null in case of failure */
-					setlocale(LC_TIME, "C");
-					strptime(line, "%a %b %e %H:%M:%S %Y", &tmp_tm);
-					info->installdate = mktime(&tmp_tm);
-					setlocale(LC_TIME, "");
-				} else {
-					info->installdate = atol(line);
-				}
+				info->installdate = _alpm_parsedate(line);
 			} else if(strcmp(line, "%PACKAGER%") == 0) {
 				if(fgets(line, sizeof(line), fp) == NULL) {
 					goto error;

lib/libalpm/be_package.c

@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <limits.h>
-#include <ctype.h>
 #include <locale.h> /* setlocale */
 #include <errno.h>
 
@@ -203,16 +202,7 @@ static int parse_descfile(struct archive *a, pmpkg_t *newpkg)
 			} else if(strcmp(key, "license") == 0) {
 				newpkg->licenses = alpm_list_add(newpkg->licenses, strdup(ptr));
 			} else if(strcmp(key, "builddate") == 0) {
-				char first = tolower((unsigned char)ptr[0]);
-				if(first > 'a' && first < 'z') {
-					struct tm tmp_tm = {0}; /* initialize to null in case of failure */
-					setlocale(LC_TIME, "C");
-					strptime(ptr, "%a %b %e %H:%M:%S %Y", &tmp_tm);
-					newpkg->builddate = mktime(&tmp_tm);
-					setlocale(LC_TIME, "");
-				} else {
-					newpkg->builddate = atol(ptr);
-				}
+				newpkg->builddate = _alpm_parsedate(ptr);
 			} else if(strcmp(key, "packager") == 0) {
 				STRDUP(newpkg->packager, ptr, RET_ERR(PM_ERR_MEMORY, -1));
 			} else if(strcmp(key, "arch") == 0) {

lib/libalpm/be_sync.c

@@ -21,7 +21,6 @@
 #include "config.h"
 
 #include <errno.h>
-#include <ctype.h>
 #include <locale.h>
 #include <limits.h>
 
@@ -313,17 +312,7 @@ static int sync_db_read(pmdb_t *db, struct archive *archive, struct archive_entr
 				READ_AND_STORE(pkg->arch);
 			} else if(strcmp(line, "%BUILDDATE%") == 0) {
 				READ_NEXT(line);
-				char first = tolower((unsigned char)line[0]);
-				if(first > 'a' && first < 'z') {
-					/* initialize to null in case of failure */
-					struct tm tmp_tm = {0};
-					setlocale(LC_TIME, "C");
-					strptime(line, "%a %b %e %H:%M:%S %Y", &tmp_tm);
-					pkg->builddate = mktime(&tmp_tm);
-					setlocale(LC_TIME, "");
-				} else {
-					pkg->builddate = atol(line);
-				}
+				pkg->builddate = _alpm_parsedate(line);
 			} else if(strcmp(line, "%PACKAGER%") == 0) {
 				READ_AND_STORE(pkg->packager);
 			} else if(strcmp(line, "%CSIZE%") == 0) {

lib/libalpm/util.c

@@ -923,4 +923,17 @@ unsigned long _alpm_hash_sdbm(const char *str)
 	return(hash);
 }
 
+long _alpm_parsedate(const char *line)
+{
+	if(isalpha((unsigned char)line[0])) {
+		/* initialize to null in case of failure */
+		struct tm tmp_tm = { 0 };
+		setlocale(LC_TIME, "C");
+		strptime(line, "%a %b %e %H:%M:%S %Y", &tmp_tm);
+		setlocale(LC_TIME, "");
+		return(mktime(&tmp_tm));
+	}
+	return(atol(line));
+}
+
 /* vim: set ts=2 sw=2 noet: */

lib/libalpm/util.h

@@ -95,6 +95,7 @@ int _alpm_test_md5sum(const char *filepath, const char *md5sum);
 int _alpm_archive_fgets(struct archive *a, struct archive_read_buffer *b);
 int _alpm_splitname(const char *target, pmpkg_t *pkg);
 unsigned long _alpm_hash_sdbm(const char *str);
+long _alpm_parsedate(const char *line);
 
 #ifndef HAVE_STRSEP
 char *strsep(char **, const char *);