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Subject[PATCH] ver_linux: Assign constant RE to variable name for clarity
Date
The regular expression that matches the version number of a utility
being queried is used as a constant expression in the current
implementation. Assigning the RE in question to a variable gives it a
meaningful name that clearly expresses the intended use of the expression
without having to think about the details of implementation.

Signed-off-by: Alexander Kapshuk <alexander.kapshuk@gmail.com>
---
scripts/ver_linux | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/scripts/ver_linux b/scripts/ver_linux
index a6c728db05ce..810e608baa24 100755
--- a/scripts/ver_linux
+++ b/scripts/ver_linux
@@ -13,6 +13,8 @@ BEGIN {
system("uname -a")
printf("\n")

+ vernum = "[0-9]+([.]?[0-9]+)+"
+
printversion("GNU C", version("gcc -dumpversion"))
printversion("GNU Make", version("make --version"))
printversion("Binutils", version("ld -v"))
@@ -34,7 +36,7 @@ BEGIN {
while (getline <"/proc/self/maps" > 0) {
if (/libc.*\.so$/) {
n = split($0, procmaps, "/")
- if (match(procmaps[n], /[0-9]+([.]?[0-9]+)+/)) {
+ if (match(procmaps[n], vernum)) {
ver = substr(procmaps[n], RSTART, RLENGTH)
printversion("Linux C Library", ver)
break
@@ -70,7 +72,7 @@ BEGIN {
function version(cmd, ver) {
cmd = cmd " 2>&1"
while (cmd | getline > 0) {
- if (match($0, /[0-9]+([.]?[0-9]+)+/)) {
+ if (match($0, vernum)) {
ver = substr($0, RSTART, RLENGTH)
break
}
--
2.20.1
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