poafloc

Parser Of Arguments For Lines Of Commands
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commit 1c22b810cdeba5e66ea485338d03cbe8964e861f
parent 2e53ace02f887ce07e78f834fab29588c1dd648c
author Dimitrije Dobrota < mail@dimitrijedobrota.com >
date Fri, 7 Jun 2024 14:26:29 +0200

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Diffstat:
M args.hpp | +++++++++++++++++ ------

1 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/ args.hpp b/ args.hpp

@@ -90,10 +90,13 @@ class Parser {

continue;
}

// stop parsing options, rest are normal arguments
if (!std::strcmp(argv[i], "--")) break;

if (argv[i][1] != '-') {
if (argv[i][1] != '-') { // short option
const char *opt = argv[i] + 1;

// loop over ganged options
for (int j = 0; opt[j]; j++) {
const char key = opt[j];

@@ -102,8 +105,11 @@ class Parser {


const char *arg = nullptr;
if (option->arg) {
if (opt[j + 1] != 0) arg = opt + j + 1;
else if ((option->options & ARG_OPTIONAL) == 0) {
if (opt[j + 1] != 0) {
// rest of the line is option argument
arg = opt + j + 1;
} else if ((option->options & ARG_OPTIONAL) == 0) {
// next argv is option argument
if (i == argc) goto missing;
arg = argv[++i];
}

@@ -111,9 +117,10 @@ class Parser {


argp->parser(key, arg, input);

// if last option required argument we are done
if (arg) break;
}
} else {
} else { // long option
const char *opt = argv[i] + 2;
const auto eq = std::strchr(opt, '=');

@@ -127,8 +134,11 @@ class Parser {


if (!option->arg && eq) goto excess;
if (option->arg) {
if (eq) arg = eq + 1;
else if ((option->options & ARG_OPTIONAL) == 0) {
if (eq) {
// everything after = is option argument
arg = eq + 1;
} else if ((option->options & ARG_OPTIONAL) == 0) {
// next argv is option argument
if (i == argc) goto missing;
arg = argv[++i];
}

@@ -138,6 +148,7 @@ class Parser {

}
}

// parse rest argv as normal arguments
for (i = i + 1; i < argc; i++) {
argp->parser(Key::ARG, argv[i], input);
args++;