rwx/sh/main.awk
2025-07-06 06:59:32 +02:00

108 lines
2.6 KiB
Awk

function append(line) {
if (doc) {
doc = doc "\n"
}
doc = doc line
}
function output(name) {
print name
print doc
exit
}
function reset() {
doc = ""
}
BEGIN {
RE_ANY = "(.*)"
RE_CONST = "([_A-Z][_0-9A-Z]*)"
RE_SET = "=.*"
RE_SPACE = "[[:space:]]"
RE_SPACES = RE_SPACE "*"
RE_VAR = "([_a-z][_0-9a-z]*)"
RE_BEGIN = "^"
RE_END = RE_SPACES "$"
RE_FUNC = RE_SPACES "\\(" RE_SPACES "\\)" RE_SPACES "{"
RE_ALIAS = RE_BEGIN "#=" RE_SPACES RE_VAR RE_END
RE_CONSTANT = RE_BEGIN RE_CONST RE_SET RE_END
RE_DOC = RE_BEGIN "#" RE_SPACE RE_ANY RE_END
RE_FUNCTION = RE_BEGIN RE_VAR RE_FUNC RE_END
RE_MODULE = RE_BEGIN "#." RE_SPACES RE_ANY RE_END
RE_SHEBANG = RE_BEGIN "#!" RE_SPACES RE_ANY RE_END
RE_VARIABLE = RE_BEGIN RE_VAR RE_SET RE_END
alias = 0
reset()
module = 0
}
{
if (action == "alias") {
if (match($0, RE_ALIAS, m)) {
append(m[1])
} else if (match($0, RE_FUNCTION, m)) {
n = split(doc, array, "\n")
for (i = 1; i<= n; i++) {
print array[i] "() { " m[1] " \"${@}\" ; }"
}
reset()
} else {
reset()
}
} else if (action == "doc") {
# doc
if (match($0, RE_SHEBANG, m)) {
append("shebang: " m[1])
} else if (match($0, RE_DOC, m)) {
append(m[1])
} else if (match($0, RE_ALIAS, m)) {
append("alias: " m[1])
if (m[1] == target) {
alias = 1
}
# set
} else if (match($0, RE_CONSTANT, m)) {
if (m[1] == target) {
printf "constant: "
output(m[1])
} else {
reset()
}
} else if (match($0, RE_VARIABLE, m)) {
if (m[1] == target) {
printf "variable: "
output(m[1])
} else {
reset()
}
# others
} else if (match($0, RE_MODULE, m)) {
reset()
if (m[1] == target) {
module = 1
}
} else if (match($0, RE_FUNCTION, m)) {
if (alias) {
print "alias: " target
printf "function: "
output(m[1])
} else if (m[1] == target) {
printf "function: "
output(target)
} else {
reset()
}
} else {
if (module) {
printf "module: "
output(target)
} else {
reset()
}
}
}
}