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Userland: Add a simple JSON pretty-printing utility called /bin/jp

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This commit is contained in:
Andreas Kling 2019-06-30 09:11:04 +02:00
parent 9962cb7291
commit 73d0e7cd8f
1 changed files with 70 additions and 0 deletions
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Userland/jp.cpp Normal file
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#include <AK/JsonArray.h>
#include <AK/JsonObject.h>
#include <AK/JsonValue.h>
#include <LibCore/CFile.h>
#include <stdio.h>
static void print(const JsonValue& value, int indent = 0);
static void print_indent(int indent)
{
for (int i = 0; i < indent; ++i)
printf(" ");
}
int main(int argc, char** argv)
{
if (argc != 2) {
fprintf(stderr, "usage: jp <file>\n");
return 1;
}
CFile file(argv[1]);
if (!file.open(CIODevice::ReadOnly)) {
fprintf(stderr, "Couldn't open %s for reading: %s\n", argv[1], file.error_string());
return 1;
}
auto file_contents = file.read_all();
auto json = JsonValue::from_string(file_contents);
print(json);
printf("\n");
return 0;
}
void print(const JsonValue& value, int indent)
{
if (value.is_object()) {
printf("{\n");
value.as_object().for_each_member([&](auto& member_name, auto& member_value) {
print_indent(indent + 1);
printf("\"\033[33;1m%s\033[0m\": ", member_name.characters());
print(member_value, indent + 1);
printf(",\n");
});
print_indent(indent);
printf("}");
return;
}
if (value.is_array()) {
printf("[\n");
value.as_array().for_each([&](auto& entry_value) {
print_indent(indent + 1);
print(entry_value, indent + 1);
printf(",\n");
});
print_indent(indent);
printf("]");
return;
}
if (value.is_string())
printf("\033[31;1m");
else if (value.is_number())
printf("\033[35;1m");
else if (value.is_bool())
printf("\033[32;1m");
else if (value.is_null() || value.is_undefined())
printf("\033[34;1m");
printf("%s", value.serialized().characters());
printf("\033[0m");
}