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authorDan McGee <dan@archlinux.org>2011-08-23 01:49:29 -0500
committerDan McGee <dan@archlinux.org>2011-08-23 01:49:29 -0500
commit30d978a966c1d2a619acc49f204e4da1e0010c83 (patch)
tree213655259e062d4603b4f665ddc4f9941280c92c
parentcc03d6366a12cd1926e46265c63fba98f41faaae (diff)
vercmp: ensure 2.0a and 2.0.a do not compare equal
We had this interesting set of facts conundrum, according to vercmp return values: 2.0a < 2.0 2.0 < 2.0.a 2.0a == 2.0.a This introduces a code change that ensures '2.0a < 2.0.a' as would be expected by the first two comparisons. Unfortunately this stays us a bit further from upstream RPM code, but those are the breaks (in RPM, the versions involving 'a' do in fact compare the same, but they are both greater than the bare '2.0'). Signed-off-by: Dan McGee <dan@archlinux.org>
-rw-r--r--doc/pacman.8.txt2
-rw-r--r--doc/vercmp.8.txt2
-rw-r--r--lib/libalpm/version.c9
-rwxr-xr-xtest/util/vercmptest.sh6
4 files changed, 15 insertions, 4 deletions
diff --git a/doc/pacman.8.txt b/doc/pacman.8.txt
index 2a640f8f..59853812 100644
--- a/doc/pacman.8.txt
+++ b/doc/pacman.8.txt
@@ -86,7 +86,7 @@ You can also use `pacman -Su` to upgrade all packages that are out of date. See
to determine which packages need upgrading. This behavior operates as follows:
Alphanumeric:
- 1.0a < 1.0alpha < 1.0b < 1.0beta < 1.0p < 1.0pre < 1.0rc < 1.0
+ 1.0a < 1.0b < 1.0beta < 1.0p < 1.0pre < 1.0rc < 1.0 < 1.0.a < 1.0.1
Numeric:
1 < 1.0 < 1.1 < 1.1.1 < 1.2 < 2.0 < 3.0.0
+
diff --git a/doc/vercmp.8.txt b/doc/vercmp.8.txt
index a3bc5611..4b0490fa 100644
--- a/doc/vercmp.8.txt
+++ b/doc/vercmp.8.txt
@@ -26,7 +26,7 @@ numbers. It outputs values as follows:
Version comparsion operates as follows:
Alphanumeric:
- 1.0a < 1.0alpha < 1.0b < 1.0beta < 1.0p < 1.0pre < 1.0rc < 1.0
+ 1.0a < 1.0b < 1.0beta < 1.0p < 1.0pre < 1.0rc < 1.0 < 1.0.a < 1.0.1
Numeric:
1 < 1.0 < 1.1 < 1.1.1 < 1.2 < 2.0 < 3.0.0
diff --git a/lib/libalpm/version.c b/lib/libalpm/version.c
index 73d6a660..6b65a413 100644
--- a/lib/libalpm/version.c
+++ b/lib/libalpm/version.c
@@ -98,8 +98,8 @@ static int rpmvercmp(const char *a, const char *b)
str1 = strdup(a);
str2 = strdup(b);
- one = str1;
- two = str2;
+ one = ptr1 = str1;
+ two = ptr2 = str2;
/* loop through each version segment of str1 and str2 and compare them */
while (*one && *two) {
@@ -109,6 +109,11 @@ static int rpmvercmp(const char *a, const char *b)
/* If we ran to the end of either, we are finished with the loop */
if (!(*one && *two)) break;
+ /* If the separator lengths were different, we are also finished */
+ if ((one - ptr1) != (two - ptr2)) {
+ return (one - ptr1) < (two - ptr2) ? -1 : 1;
+ }
+
ptr1 = one;
ptr2 = two;
diff --git a/test/util/vercmptest.sh b/test/util/vercmptest.sh
index 54ede04b..6b4bcbc2 100755
--- a/test/util/vercmptest.sh
+++ b/test/util/vercmptest.sh
@@ -118,6 +118,12 @@ runtest 1.5.1 1.5.b 1
runtest 1.5.b-1 1.5.b 0
runtest 1.5-1 1.5.b -1
+# same/similar content, differing separators
+runtest 2.0 2_0 0
+runtest 2.0_a 2_0.a 0
+runtest 2.0a 2.0.a -1
+runtest 2___a 2_a 1
+
# epoch included version comparisons
runtest 0:1.0 0:1.0 0
runtest 0:1.0 0:1.1 -1