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scripts/bash_aliases: srcfix 

I clarified the code about two things:

- Checking how many arguments are being passed.
    Here, some functions didn't reject extra arguments when they
    weren't being used.  Fix that.
    I also changed the code to use $#, which is more explicit.
    And use arithmetic expressions, which better indicate that
    we're dealing with numbers.

- Remove unneeded options from sort.
    Reported-by: Stefan Puiu <stefan.puiu@gmail.com>
    After Stefan asked about why am I using 'sort -V',
    I noticed that I really don't need '-V', and it may confuse
    people trying to understand the script, so even though I
    slightly prefer the output of 'sort -V', in this case, it's
    better to use the simpler 'sort' (yet I need 'sort', to
    maintain consistency in the results (find is quite random)).

Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Alejandro Colomar 2021-05-09 23:39:26 +02:00 committed by Michael Kerrisk
parent 94bf02f41b
commit 34afcb0dad
1 changed files with 12 additions and 12 deletions
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24
scripts/bash_aliases
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@ -45,20 +45,20 @@ function sed_rm_ccomments()
function grep_syscall()
{
if ! [ -v 1 ]; then
if (($# != 1)); then
>&2 echo "Usage: ${FUNCNAME[0]} <syscall>";
return ${EX_USAGE};
fi
find * -type f \
|grep '\.c$' \
|sort -V \
|sort \
|xargs pcregrep -Mn "(?s)^\w*SYSCALL_DEFINE.\(${1},.*?\)" \
|sed -E 's/^[^:]+:[0-9]+:/&\n/';
find * -type f \
|grep '\.[ch]$' \
|sort -V \
|sort \
|xargs pcregrep -Mn "(?s)^asmlinkage\s+[\w\s]+\**sys_${1}\s*\(.*?\)" \
|sed -E 's/^[^:]+:[0-9]+:/&\n/';
}
@ -70,14 +70,14 @@ function grep_syscall()
function grep_syscall_def()
{
if ! [ -v 1 ]; then
if (($# != 1)); then
>&2 echo "Usage: ${FUNCNAME[0]} <syscall>";
return ${EX_USAGE};
fi
find * -type f \
|grep '\.c$' \
|sort -V \
|sort \
|xargs pcregrep -Mn "(?s)^\w*SYSCALL_DEFINE.\(${1},.*?^}" \
|sed -E 's/^[^:]+:[0-9]+:/&\n/';
}
@ -91,7 +91,7 @@ function grep_syscall_def()
function man_section()
{
if ! [ -v 2 ]; then
if (($# < 2)); then
>&2 echo "Usage: ${FUNCNAME[0]} <dir> <section>...";
return ${EX_USAGE};
fi
@ -104,7 +104,7 @@ function man_section()
|xargs wc -l \
|grep -v -e '\b1 ' -e '\btotal\b' \
|awk '{ print $2 }' \
|sort -V \
|sort \
|while read -r manpage; do
cat \
<(<${manpage} sed -n '/^\.TH/,/^\.SH/{/^\.SH/!p}') \
@ -125,7 +125,7 @@ function man_section()
function man_lsfunc()
{
if ! [ -v 1 ]; then
if (($# < 1)); then
>&2 echo "Usage: ${FUNCNAME[0]} <manpage|manNdir>...";
return ${EX_USAGE};
fi
@ -147,7 +147,7 @@ function man_lsfunc()
function man_lsvar()
{
if ! [ -v 1 ]; then
if (($# < 1)); then
>&2 echo "Usage: ${FUNCNAME[0]} <manpage|manNdir>...";
return ${EX_USAGE};
fi
@ -172,7 +172,7 @@ function man_lsvar()
function pdfman()
{
if ! [ -v 1 ]; then
if (($# != 1)); then
>&2 echo "Usage: ${FUNCNAME[0]} <man-page.n>";
return ${EX_USAGE};
fi;
@ -209,14 +209,14 @@ function man_gitstaged()
function grep_glibc_prototype()
{
if ! [ -v 1 ]; then
if (($# != 1)); then
>&2 echo "Usage: ${FUNCNAME[0]} <func>";
return ${EX_USAGE};
fi
find * -type f \
|grep '\.h$' \
|sort -V \
|sort \
|xargs pcregrep -Mn \
"(?s)^[\w[][\w\s(,)[:\]]+\s+\**${1}\s*\([\w\s(,)[\]*]+?(...)?\)[\w\s(,)[:\]]*;" \
|sed -E 's/^[^:]+:[0-9]+:/&\n/';