mirror of
https://github.com/wader/fq.git
synced 2024-11-30 09:58:13 +03:00
787 lines
22 KiB
Plaintext
787 lines
22 KiB
Plaintext
include "internal";
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include "funcs";
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include "args";
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include "query";
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# generated decode functions per format
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include "@format/decode";
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# include per format specific functions
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include "@format/all";
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# optional user init
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include "@config/init?";
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# try to be same exit codes as jq
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# TODO: jq seems to halt processing inputs on JSON decode error but not IO errors,
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# seems strange.
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# jq '(' <(echo 1) <(echo 2) ; echo $? => 3 and no inputs processed
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# jq '.' missing <(echo 2) ; echo $? => 2 and continues process inputs
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# jq '.' <(echo 'a') <(echo 123) ; echo $? => 4 and stops process inputs
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# jq '.' missing <(echo 'a') <(echo 123) ; echo $? => 2 ???
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# jq '"a"+.' <(echo '"a"') <(echo 1) ; echo $? => 5
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# jq '"a"+.' <(echo 1) <(echo '"a"') ; echo $? => 0
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def _exit_code_args_error: 2;
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def _exit_code_input_io_error: 2;
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def _exit_code_compile_error: 3;
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def _exit_code_input_decode_error: 4;
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def _exit_code_expr_error: 5;
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# . will have additional array of options taking priority
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# NOTE: is called from go *interp.Interp Options()
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def options($opts):
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[_default_options] + _options_stack + $opts | add;
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def options: options([{}]);
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def _obj_to_csv_kv:
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[to_entries[] | [.key, .value] | join("=")] | join(",");
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def _build_default_options:
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( (null | stdout) as $stdout
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| {
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addrbase: 16,
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arg: [],
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argjson: [],
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arraytruncate: 50,
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bitsformat: "snippet",
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bytecolors: "0-0xff=brightwhite,0=brightblack,32-126:9-13=white",
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color: ($stdout.is_terminal and env.CLICOLOR != null),
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colors: (
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{
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null: "brightblack",
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false: "yellow",
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true: "yellow",
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number: "cyan",
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string: "green",
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objectkey: "brightblue",
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array: "white",
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object: "white",
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index: "white",
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value: "white",
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error: "brightred",
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dumpheader: "yellow+underline",
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dumpaddr: "yellow"
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} | _obj_to_csv_kv
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),
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compact: false,
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decode_file: [],
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decode_format: "probe",
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decode_progress: (env.NODECODEPROGRESS == null),
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depth: 0,
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# TODO: intdiv 2 * 2 to get even number, nice or maybe not needed?
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displaybytes: (if $stdout.is_terminal then [intdiv(intdiv($stdout.width; 8); 2) * 2, 4] | max else 16 end),
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expr: ".",
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expr_file: null,
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expr_eval_path: "arg",
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filenames: ["-"],
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include_path: null,
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join_string: "\n",
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linebytes: (if $stdout.is_terminal then [intdiv(intdiv($stdout.width; 8); 2) * 2, 4] | max else 16 end),
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null_input: false,
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rawfile: [],
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raw_output: ($stdout.is_terminal | not),
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raw_string: false,
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repl: false,
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sizebase: 10,
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show_formats: false,
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show_help: false,
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show_options: false,
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slurp: false,
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string_input: false,
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unicode: ($stdout.is_terminal and env.CLIUNICODE != null),
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verbose: false,
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}
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);
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def _toboolean:
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try
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if . == "true" then true
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elif . == "false" then false
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else tonumber != 0
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end
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catch
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null;
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def _tonumber:
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try tonumber catch null;
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def _tostring:
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if . != null then
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( "\"\(.)\""
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| try
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( fromjson
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| if type != "string" then error end
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)
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catch null
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)
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end;
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def _toarray(f):
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try
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( fromjson
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| if type == "array" and (all(f) | not) then null end
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)
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catch null;
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def _is_string_pair:
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type == "array" and length == 2 and all(type == "string");
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def _to_options:
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( {
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addrbase: (.addrbase | _tonumber),
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arg: (.arg | _toarray(_is_string_pair)),
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argjson: (.argjson | _toarray(_is_string_pair)),
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arraytruncate: (.arraytruncate | _tonumber),
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bitsformat: (.bitsformat | _tostring),
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bytecolors: (.bytecolors | _tostring),
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color: (.color | _toboolean),
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colors: (.colors | _tostring),
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compact: (.compact | _toboolean),
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decode_file: (.decode_file | _toarray(type == "string")),
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decode_format: (.decode_format | _tostring),
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decode_progress: (.decode_progress | _toboolean),
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depth: (.depth | _tonumber),
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displaybytes: (.displaybytes | _tonumber),
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expr: (.expr | _tostring),
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expr_file: (.expr_file | _tostring),
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filename: (.filenames | _toarray(type == "string")),
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include_path: (.include_path | _tostring),
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join_string: (.join_string | _tostring),
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linebytes: (.linebytes | _tonumber),
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null_input: (.null_input | _toboolean),
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rawfile: (.rawfile| _toarray(_is_string_pair)),
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raw_output: (.raw_output | _toboolean),
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raw_string: (.raw_string | _toboolean),
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repl: (.repl | _toboolean),
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sizebase: (.sizebase | _tonumber),
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show_formats: (.show_formats | _toboolean),
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show_help: (.show_help | _toboolean),
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show_options: (.show_options | _toboolean),
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slurp: (.slurp | _toboolean),
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string_input: (.string_input | _toboolean),
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unicode: (.unicode | _toboolean),
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verbose: (.verbose | _toboolean),
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}
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| with_entries(select(.value != null))
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);
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# TODO: refactor this
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# TODO: completionMode
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# TODO: return escaped identifier, not sure current readline implementation supports
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# completions that needs to change previous input, ex: .a\t -> ."a \" b" etc
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def _complete($e; $cursor_pos):
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def _is_internal: startswith("_") or startswith("$_");
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def _query_index_or_key($q):
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( ([.[] | eval($q) | type]) as $n
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| if ($n | all(. == "object")) then "."
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elif ($n | all(. == "array")) then "[]"
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else null
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end
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);
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# only complete if at end or there is a whitespace for now
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if ($e[$cursor_pos] | . == "" or . == " ") then
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( . as $c
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| ( $e[0:$cursor_pos] | _complete_query) as {$type, $query, $prefix}
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| {
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prefix: $prefix,
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names: (
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if $type == "none" then
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( $c
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| _query_index_or_key($query)
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| if . then [.] else [] end
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)
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else
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( $c
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| eval($query)
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| ($prefix | _is_internal) as $prefix_is_internal
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| map(
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select(
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strings and
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(_is_ident or $type == "variable") and
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((_is_internal | not) or $prefix_is_internal or $type == "index") and
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startswith($prefix)
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)
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)
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| unique
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| sort
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| if length == 1 and .[0] == $prefix then
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( $c
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| _query_index_or_key($e)
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| if . then [$prefix+.] else [$prefix] end
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)
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end
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)
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end
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)
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}
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)
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else
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{prefix: "", names: []}
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end;
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def _complete($e): _complete($e; $e | length);
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def _prompt:
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def _type_name_error:
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( . as $c
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| try
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( _display_name
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, if ._error then "!" else empty end
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)
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catch ($c | type)
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);
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def _path_prefix:
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(._path? // []) | if . == [] then "" else path_to_expr + " " end;
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def _preview:
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if format != null or type != "array" then
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_type_name_error
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else
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( "["
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, if length > 0 then (.[0] | _type_name_error) else empty end
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, if length > 1 then ", ..." else empty end
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, "]"
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, if length > 1 then "[\(length)]" else empty end
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)
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end;
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( [ (_options_stack | length | if . > 2 then ((.-2) * ">") + " " else empty end)
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, if length == 0 then
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"empty"
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else
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( .[0]
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| _path_prefix
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, _preview
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)
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end
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, if length > 1 then ", [\(length)]" else empty end
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, "> "
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]
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) | join("");
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# TODO: better way? what about nested eval errors?
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def _eval_is_compile_error: type == "object" and .error != null and .what != null;
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def _eval_compile_error_tostring:
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"\(.filename // "src"):\(.line):\(.column): \(.error)";
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def _eval($e; $filename; f; on_error; on_compile_error):
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( _default_options(_build_default_options) as $_
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| try eval($e; $filename) | f
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catch
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if _eval_is_compile_error then on_compile_error
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else on_error
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end
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);
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def _repl_display: _display({depth: 1});
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def _repl_on_error:
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( if _eval_is_compile_error then _eval_compile_error_tostring end
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| (_error_str | println)
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);
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def _repl_on_compile_error: _repl_on_error;
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def _repl_eval($e): _eval($e; "repl"; _repl_display; _repl_on_error; _repl_on_compile_error);
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# run read-eval-print-loop
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def _repl($opts): #:: a|(Opts) => @
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def _read_expr:
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# both _prompt and _complete want arrays
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( . as $c
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| readline(_prompt; "_complete")
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| if trim == "" then
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$c | _read_expr
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end
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);
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def _repl_loop:
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( . as $c
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| try
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( _read_expr as $expr
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# TODO: catch error here?
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| $expr
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| try _query_fromstring
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# TODO: nicer way to set filename
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catch (. | .filename = "repl")
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| if _query_pipe_last | _query_is_func("repl") then
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( _query_slurp_wrap(_query_func_rename("_repl_iter"))
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| _query_tostring as $wrap_expr
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| $c
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| _repl_eval($wrap_expr)
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)
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else
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( $c
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| .[]
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| _repl_eval($expr)
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)
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end
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)
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catch
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if . == "interrupt" then empty
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elif . == "eof" then error("break")
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elif _eval_is_compile_error then _repl_on_error
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else error(.)
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end
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);
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( _options_stack(. + [$opts]) as $_
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| _finally(
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_repeat_break(_repl_loop);
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_options_stack(.[:-1])
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)
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);
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def _repl_iter($opts): _repl($opts);
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def _repl_iter: _repl({});
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# just gives error, call appearing last will be renamed to _repl_iter
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def repl($_): error("repl must be last");
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def repl: error("repl must be last");
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def _cli_expr_on_error:
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( . as $err
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| _cli_last_expr_error($err) as $_
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| (_error_str | _errorln)
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);
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def _cli_expr_on_compile_error:
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( _eval_compile_error_tostring
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| halt_error(_exit_code_compile_error)
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);
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# _cli_expr_eval halts on compile errors
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def _cli_expr_eval($e; $filename; f):
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_eval($e; $filename; f; _cli_expr_on_error; _cli_expr_on_compile_error);
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def _cli_expr_eval($e; $filename):
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_eval($e; $filename; .; _cli_expr_on_error; _cli_expr_on_compile_error);
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# TODO: introspect and show doc, reflection somehow?
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def help:
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( "Type jq expression to evaluate"
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, "\\t Auto completion"
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, "Up/Down History"
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, "^C Interrupt execution"
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, "^D Exit REPL"
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) | println;
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def display($opts): _display($opts);
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def display: _display({});
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def d($opts): _display($opts);
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def d: _display({});
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def full($opts): _display({arraytruncate: 0} + $opts);
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def full: full({});
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def f($opts): full($opts);
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def f: full;
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def verbose($opts): _display({verbose: true, arraytruncate: 0} + $opts);
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def verbose: verbose({});
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def v($opts): verbose($opts);
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def v: verbose;
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def decode($name; $opts): _decode($name; $opts);
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def decode($name): _decode($name; {});
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def decode: _decode(options.decode_format; {});
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# next valid input
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def input:
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def _input($opts; f):
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( _input_filenames
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| if length == 0 then error("break") end
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| [.[0], .[1:]] as [$h, $t]
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| _input_filenames($t)
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| _input_filename(null) as $_
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| $h
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| try
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( open
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| _input_filename($h) as $_
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| .
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)
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catch
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( . as $err
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| _input_io_errors(. += {($h): $err}) as $_
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| $err
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| (_error_str | _errorln)
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, _input($opts; f)
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)
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| try f
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catch
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( . as $err
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| _input_decode_errors(. += {($h): $err}) as $_
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| "\($h): failed to decode (\($opts.decode_format)), try -d FORMAT to force"
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| (_error_str | _errorln)
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, _input($opts; f)
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)
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);
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# TODO: don't rebuild options each time
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( options as $opts
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# TODO: refactor into def
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# this is a bit strange as jq for --raw-string can return string instead
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# with data from multiple inputs
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| if $opts.string_input then
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( _input_strings_lines
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| if . then
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# we're already iterating lines
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if length == 0 then error("break")
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else
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( [.[0], .[1:]] as [$h, $t]
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| _input_strings_lines($t)
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| $h
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)
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end
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else
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( [_repeat_break(_input($opts; tobytes | tostring))]
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| join("") as $all
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| if $opts.slurp then
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# jq --raw-input combined with --slurp reads all inputs into a string
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# make next input break
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( _input_strings_lines([]) as $_
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| $all
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)
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else
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# TODO: different line endings?
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# jq strips last newline, "a\nb" and "a\nb\n" behaves the same
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# also jq -R . <(echo -ne 'a\nb') <(echo c) produces "a" and "bc"
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( _input_strings_lines(
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( $all
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| rtrimstr("\n")
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| split("\n")
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)
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) as $_
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| input
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)
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end
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)
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end
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)
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else _input($opts; decode($opts.decode_format))
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end
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);
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# iterate all valid inputs
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def inputs: _repeat_break(input);
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def input_filename: _input_filename;
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|
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def var: _variables;
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def var($k; f):
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( . as $c
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| if ($k | _is_ident | not) then error("invalid variable name: \($k)") end
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| _variables(.[$k] |= f)
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| empty
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);
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def var($k): . as $c | var($k; $c);
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|
|
|
|
def _main:
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def _formats_list:
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[ ( formats
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| to_entries[]
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| [(.key+" "), .value.description]
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)
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]
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| table(
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.;
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map(
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( . as $rc
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| .string
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| if $rc.column != 1 then rpad(" "; $rc.maxwidth) end
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)
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) | join("")
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);
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def _opts($version):
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{
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"arg": {
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long: "--arg",
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description: "Set variable $NAME to string VALUE",
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pairs: "NAME VALUE"
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},
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"argjson": {
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long: "--argjson",
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description: "Set variable $NAME to JSON",
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pairs: "NAME JSON"
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},
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"compact": {
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short: "-c",
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long: "--compact-output",
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description: "Compact output",
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bool: true
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},
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"decode_format": {
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short: "-d",
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long: "--decode",
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description: "Decode format (probe)",
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string: "NAME"
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},
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"decode_file": {
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long: "--decode-file",
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description: "Set variable $NAME to decode of file",
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pairs: "NAME PATH"
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},
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"expr_file": {
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short: "-f",
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long: "--from-file",
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description: "Read EXPR from file",
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string: "PATH"
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},
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"show_formats": {
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long: "--formats",
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description: "Show supported formats",
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bool: true
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},
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"show_help": {
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short: "-h",
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long: "--help",
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|
description: "Show help",
|
|
bool: true
|
|
},
|
|
"join_output": {
|
|
short: "-j",
|
|
long: "--join-output",
|
|
description: "No newline between outputs",
|
|
bool: true
|
|
},
|
|
# TODO: multiple paths
|
|
"include_path": {
|
|
short: "-L",
|
|
long: "--include-path",
|
|
description: "Include search path",
|
|
array: "PATH"
|
|
},
|
|
"null_output": {
|
|
short: "-0",
|
|
long: "--null-output",
|
|
# for jq compatibility
|
|
aliases: ["--nul-output"],
|
|
description: "Null byte between outputs",
|
|
bool: true
|
|
},
|
|
"null_input": {
|
|
short: "-n",
|
|
long: "--null-input",
|
|
description: "Null input (use input/0 and inputs/0 to read input)",
|
|
bool: true
|
|
},
|
|
"option": {
|
|
short: "-o",
|
|
long: "--option",
|
|
description: "Set option, eg: color=true",
|
|
object: "KEY=VALUE",
|
|
},
|
|
"show_options": {
|
|
long: "--options",
|
|
description: "Show all options",
|
|
bool: true
|
|
},
|
|
"string_input": {
|
|
short: "-R",
|
|
long: "--raw-input",
|
|
description: "Read raw input strings (don't decode)",
|
|
bool: true
|
|
},
|
|
"rawfile": {
|
|
long: "--rawfile",
|
|
description: "Set variable $NAME to string content of file",
|
|
pairs: "NAME PATH"
|
|
},
|
|
"raw_string": {
|
|
short: "-r",
|
|
# for jq compat, is called raw string internally, "raw output" is if
|
|
# we can output raw bytes or not
|
|
long: "--raw-output",
|
|
description: "Raw string output (without quotes)",
|
|
bool: true
|
|
},
|
|
"repl": {
|
|
short: "-i",
|
|
long: "--repl",
|
|
description: "Interactive REPL",
|
|
bool: true
|
|
},
|
|
"slurp": {
|
|
short: "-s",
|
|
long: "--slurp",
|
|
description: "Read (slurp) all inputs into an array",
|
|
bool: true
|
|
},
|
|
"show_version": {
|
|
short: "-v",
|
|
long: "--version",
|
|
description: "Show version (\($version))",
|
|
bool: true
|
|
},
|
|
};
|
|
def _banner:
|
|
( "fq - jq for files"
|
|
, "Tool, language and decoders for exploring binary data."
|
|
, "For more information see https://github.com/wader/fq"
|
|
);
|
|
def _usage($arg0; $version):
|
|
"Usage: \($arg0) [OPTIONS] [--] [EXPR] [FILE...]";
|
|
( . as {$version, $args, args: [$arg0]}
|
|
| (null | [stdin, stdout]) as [$stdin, $stdout]
|
|
# make sure we don't unintentionally use . to make things clearer
|
|
| null
|
|
| ( try args_parse($args[1:]; _opts($version))
|
|
catch halt_error(_exit_code_args_error)
|
|
) as {parsed: $parsed_args, $rest}
|
|
| _build_default_options as $default_opts
|
|
| _default_options($default_opts) as $_
|
|
# combine --args and -o key=value args
|
|
| ( $default_opts
|
|
+ ($parsed_args.option | _to_options)
|
|
+ $parsed_args
|
|
) as $args_opts
|
|
| _options_stack(
|
|
[ $args_opts
|
|
+ ( {
|
|
argjson: (
|
|
( $args_opts.argjson
|
|
| if . then map(
|
|
( . as $a
|
|
| .[1] |=
|
|
try fromjson
|
|
catch error("--argjson \($a[0]): \(.)")
|
|
)
|
|
)
|
|
end
|
|
)
|
|
),
|
|
decode_file: (
|
|
( $args_opts.decode_file
|
|
| if . then
|
|
( map(.[1] |=
|
|
try (open | decode($args_opts.decode_format))
|
|
catch halt_error(_exit_code_args_error)
|
|
)
|
|
)
|
|
end
|
|
)
|
|
),
|
|
expr: (
|
|
# if -f was used, all rest non-args are filenames
|
|
# otherwise first is expr rest is filesnames
|
|
( $args_opts.expr_file
|
|
| if . then
|
|
try (open | tobytes | tostring)
|
|
catch halt_error(_exit_code_args_error)
|
|
else $rest[0] // null
|
|
end
|
|
)
|
|
),
|
|
expr_eval_path: $args_opts.expr_file,
|
|
filenames: (
|
|
( if $args_opts.expr_file then $rest
|
|
else $rest[1:]
|
|
end
|
|
| if . == [] then null end
|
|
)
|
|
),
|
|
join_string: (
|
|
if $args_opts.join_output then ""
|
|
elif $args_opts.null_output then "\u0000"
|
|
else null
|
|
end
|
|
),
|
|
null_input: (
|
|
( if $args_opts.expr_file then $rest
|
|
else $rest[1:]
|
|
end
|
|
| if . == [] and $args_opts.repl then true
|
|
else null
|
|
end
|
|
)
|
|
),
|
|
rawfile: (
|
|
( $args_opts.rawfile
|
|
| if . then
|
|
( map(.[1] |=
|
|
try (open | tobytes | tostring)
|
|
catch halt_error(_exit_code_args_error)
|
|
)
|
|
)
|
|
end
|
|
)
|
|
),
|
|
raw_string: (
|
|
if $args_opts.raw_string
|
|
or $args_opts.join_output
|
|
or $args_opts.null_output
|
|
then true
|
|
else null
|
|
end
|
|
)
|
|
}
|
|
| with_entries(select(.value != null))
|
|
)
|
|
]
|
|
) as $_
|
|
| options as $opts
|
|
| if $opts.show_help then
|
|
( _banner
|
|
, ""
|
|
, _usage($arg0; $version)
|
|
, args_help_text(_opts($version))
|
|
) | println
|
|
elif $opts.show_version then
|
|
$version | println
|
|
elif $opts.show_formats then
|
|
_formats_list | println
|
|
elif $opts.show_options then
|
|
$opts | display
|
|
elif
|
|
( ($rest | length) == 0 and
|
|
($opts.repl | not) and
|
|
($opts.expr_file | not) and
|
|
$stdin.is_terminal and $stdout.is_terminal
|
|
) then
|
|
( (( _usage($arg0; $version), "\n") | stderr)
|
|
, null | halt_error(_exit_code_args_error)
|
|
)
|
|
else
|
|
# use _finally as display etc prints and results in empty
|
|
_finally(
|
|
# store some globals
|
|
( _include_paths($opts.include_path) as $_
|
|
| _input_filenames($opts.filenames) as $_
|
|
| _variables(
|
|
( $opts.arg +
|
|
$opts.argjson +
|
|
$opts.rawfile +
|
|
$opts.decode_file
|
|
| map({key: .[0], value: .[1]})
|
|
| from_entries
|
|
)
|
|
)
|
|
| ( def _inputs:
|
|
( if $opts.null_input then null
|
|
# note jq --slurp --raw-string is special, will be just
|
|
# a string not an array
|
|
elif $opts.string_input then inputs
|
|
elif $opts.slurp then [inputs]
|
|
else inputs
|
|
end
|
|
);
|
|
if $opts.repl then
|
|
( [_inputs]
|
|
| map(_cli_expr_eval($opts.expr; $opts.expr_eval_path))
|
|
| _repl({})
|
|
)
|
|
else
|
|
( _inputs
|
|
# iterate all inputs
|
|
| _cli_last_expr_error(null) as $_
|
|
| _cli_expr_eval($opts.expr; $opts.expr_eval_path; _repl_display)
|
|
)
|
|
end
|
|
)
|
|
)
|
|
; # finally
|
|
( if _input_io_errors then
|
|
null | halt_error(_exit_code_input_io_error)
|
|
end
|
|
| if _input_decode_errors then
|
|
null | halt_error(_exit_code_input_decode_error)
|
|
end
|
|
| if _cli_last_expr_error then
|
|
null | halt_error(_exit_code_expr_error)
|
|
end
|
|
)
|
|
)
|
|
end
|
|
);
|