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tree)
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#!/bin/bash
if (($# != 1)); then
>&2 echo "Usage: $0 <identifier>";
exit 1;
fi;
function grepc_helper()
{
find . -type f \
| grep "$1" \
| xargs grep -lPI "$2" \
| xargs grep -lP "$3" \
| sort \
| xargs pcregrep -Mn "$4" /dev/null \
| sed -E 's/^[^: ]+:[0-9]+:/\n\n&\n\n/';
}
function grepc_macro_simple()
{
grepc_helper '\.[ch]$' \
"#\s*define\s+$1\b[^(]" \
"." \
"(?s)#\s*define\s+$1\b(?!\().*?[^\\\\]$";
}
function grepc_macro_func()
{
grepc_helper '\.[ch]$' \
"#\s*define\s+$1\(" \
"." \
"(?s)#\s*define\s+$1\(.*?[^\\\\]$";
}
function grepc_macro()
{
grepc_macro_simple "$1";
grepc_macro_func "$1";
}
function grepc_enum_constant()
{
grepc_helper '\.[ch]$' \
"^enum\s" \
"^\s*$1\s*[,=]" \
"(?s)\benum\b\s*([\w\s[\]]|::)*\s*{[^}]*^\s*$1\s*[=,].*?^}.*?;";
}
function grepc_func_decl()
{
grepc_helper '\.[ch]$' \
"\b$1\s*\(" \
"." \
"(?s)^[\w[]([\w\s\(,\)[\]*]|::)+[\w\s\)*\]]\s+\**$1\s*\([\w\s\(,\)[\]*]+?(...)?\)[\w\s\(,\)[:\]]*;";
}
function grepc_func_def()
{
grepc_helper '\.[ch]$' \
"\b$1\s*\(" \
"." \
"(?s)^[\w[]([\w\s\(,\)[\]*]|::)*[\w\s\)*\]]\s+\**$1\s*\([\w\s\(,\)[\]*]+?(...)?\)\s*{.*?^}";
}
function grepc_func()
{
grepc_func_decl "$1";
grepc_func_def "$1";
}
function grepc_linux_syscall_decl()
{
grepc_helper '\.[ch]$' \
"^asmlinkage\s+[\w\s]+\**sys_$1\s*\(" \
"." \
"(?s)^asmlinkage\s+[\w\s]+\**sys_$1\s*\(.*?\)";
}
function grepc_linux_syscall_def()
{
grepc_helper '\.c$' \
"SYSCALL_DEFINE.\($1\b" \
"." \
"(?s)^\w*SYSCALL_DEFINE.\($1\b.*?^}";
}
function grepc_linux()
{
grepc_linux_syscall_decl "$1";
grepc_linux_syscall_def "$1";
}
function grepc_glibc_math()
{
grepc_func_def "M_DECL_FUNC \(__$1\)";
}
function grepc_glibc()
{
grepc_glibc_math "$1";
}
function grepc_type_struct_union_enum()
{
grepc_helper '\.[ch]$' \
"\b(struct|union|enum)\s+$1\b" \
"." \
"(?s)^(?!^\s*typedef\b)([\w[]([\w\s\(,\)[\]*]|::)*[\w\s\)*\]]\s+)?\b(struct|union|enum)\s+$1\b\s*[\w\s[\]]*{.*?^}.*?;";
}
function grepc_type_typedef_simple()
{
grepc_helper '\.[ch]$' \
"^\s*typedef\s" \
"\b$1;" \
"(?s)^\s*typedef\s+[^{};]+$1;";
}
function grepc_type_typedef_struct_union_enum()
{
grepc_helper '\.[ch]$' \
"^\s*typedef\s+(struct|union|enum)\b[^;]*$" \
"^(\s\s)?}\s*$1;" \
"(?s)^\s*typedef\s+(struct|union|enum)\s+(?:(?!^(\s\s)?}|^\s*typedef).)*^(\s\s)?}\s*$1;";
}
function grepc_type_typedef_underlying_struct_union_enum()
{
find . -type f \
| grep '\.[ch]$' \
| xargs grep -hP "^\s*typedef\s+(struct|union|enum)\s+.*\b$1;" \
| sed -E -e 's/^\s*typedef\s+//' -e "s/\s*\**\b$1;.*//" \
| sed -E -e 's/^struct\s+//' -e 's/^union\s+//' -e 's/^enum\s+//' \
| while read t; do
test "$1" != "$t" \
&& grepc_type_struct_union_enum "$t";
done;
}
function grepc_type_typedef()
{
grepc_type_typedef_simple "$1";
grepc_type_typedef_struct_union_enum "$1";
grepc_type_typedef_underlying_struct_union_enum "$1";
}
function grepc_type()
{
grepc_type_struct_union_enum "$1";
grepc_type_typedef "$1";
}
function main()
{
grepc_macro "$1";
grepc_enum_constant "$1";
grepc_func "$1";
grepc_linux "$1";
grepc_glibc "$1";
grepc_type "$1";
}
main "$1";
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