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jp: set input to stdin if there is no file specified and add

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and customizable indentation level

An example: cat /proc/net/adapters | jp
Another example: cat /proc/all | jp -i 2  (indents are set to 2 spaces, instead of 4 by default)
This commit is contained in:
Cesar Torres 2021-03-24 02:41:26 +01:00 committed by Andreas Kling
parent 4f22c92b99
commit 6c2f690a74
Notes: sideshowbarker 2024-07-18 21:06:53 +09:00 
Author: https://github.com/ngc6302h
Commit: https://github.com/SerenityOS/serenity/commit/6c2f690a74d
Pull-request: https://github.com/SerenityOS/serenity/pull/5933
1 changed files with 18 additions and 14 deletions
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32
Userland/Utilities/jp.cpp
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@ -34,11 +34,11 @@
#include <stdio.h>
#include <unistd.h>
static void print(const JsonValue& value, int indent = 0, bool use_color = true);
static void print_indent(int indent)
static void print(const JsonValue& value, int spaces_per_indent, int indent = 0, bool use_color = true);
static void print_indent(int indent, int spaces_per_indent)
{
for (int i = 0; i < indent; ++i)
out(" ");
for (int i = 0; i < indent * spaces_per_indent; ++i)
out(" ");
}
int main(int argc, char** argv)
@ -49,12 +49,16 @@ int main(int argc, char** argv)
}
const char* path = nullptr;
int spaces_in_indent = 4;
Core::ArgsParser args_parser;
args_parser.set_general_help("Pretty-print a JSON file with syntax-coloring and indentation.");
args_parser.add_positional_argument(path, "Path to JSON file", "path");
args_parser.add_option(spaces_in_indent, "Indent size", "indent-size", 'i', "spaces_in_indent");
args_parser.add_positional_argument(path, "Path to JSON file", "path", Core::ArgsParser::Required::No);
VERIFY(spaces_in_indent >= 0);
args_parser.parse(argc, argv);
if (path == nullptr)
path = "/dev/stdin";
auto file = Core::File::construct(path);
if (!file->open(Core::IODevice::ReadOnly)) {
warnln("Couldn't open {} for reading: {}", path, file->error_string());
@ -73,13 +77,13 @@ int main(int argc, char** argv)
return 1;
}
print(json.value(), 0, isatty(STDOUT_FILENO));
print(json.value(), spaces_in_indent, 0, isatty(STDOUT_FILENO));
outln();
return 0;
}
void print(const JsonValue& value, int indent, bool use_color)
void print(const JsonValue& value, int spaces_per_indent, int indent, bool use_color)
{
if (value.is_object()) {
size_t printed_members = 0;
@ -87,17 +91,17 @@ void print(const JsonValue& value, int indent, bool use_color)
outln("{{");
object.for_each_member([&](auto& member_name, auto& member_value) {
++printed_members;
print_indent(indent + 1);
print_indent(indent + 1, spaces_per_indent);
if (use_color)
out("\"\033[33;1m{}\033[0m\": ", member_name);
else
out("\"{}\": ", member_name);
print(member_value, indent + 1, use_color);
print(member_value, spaces_per_indent, indent + 1, use_color);
if (printed_members < static_cast<size_t>(object.size()))
out(",");
outln();
});
print_indent(indent);
print_indent(indent, spaces_per_indent);
out("}}");
return;
}
@ -107,13 +111,13 @@ void print(const JsonValue& value, int indent, bool use_color)
outln("[");
array.for_each([&](auto& entry_value) {
++printed_entries;
print_indent(indent + 1);
print(entry_value, indent + 1, use_color);
print_indent(indent + 1, spaces_per_indent);
print(entry_value, spaces_per_indent, indent + 1, use_color);
if (printed_entries < static_cast<size_t>(array.size()))
out(",");
outln();
});
print_indent(indent);
print_indent(indent, spaces_per_indent);
out("]");
return;
}