#48 support feature isatty on stdout

3 files changed, 63 insertions, 56 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 6819a49..22edba1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,197 +4,196 @@
 name = "ansi_term"
 version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
 dependencies = [
- "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi",
 ]
 
 [[package]]
 name = "assert_cmd"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c88b9ca26f9c16ec830350d309397e74ee9abdfd8eb1f71cb6ecc71a3fc818da"
 dependencies = [
- "doc-comment 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "predicates 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "predicates-core 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "predicates-tree 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "wait-timeout 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "doc-comment",
+ "predicates",
+ "predicates-core",
+ "predicates-tree",
+ "wait-timeout",
 ]
 
 [[package]]
 name = "atty"
 version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a7d5b8723950951411ee34d271d99dddcc2035a16ab25310ea2c8cfd4369652"
 dependencies = [
- "libc 0.2.47 (registry+https://github.com/rust-lang/crates.io-index)",
- "termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc",
+ "termion",
+ "winapi",
 ]
 
 [[package]]
 name = "bitflags"
 version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "228047a76f468627ca71776ecdebd732a3423081fcf5125585bcd7c49886ce12"
 
 [[package]]
 name = "clap"
 version = "2.32.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b957d88f4b6a63b9d70d5f454ac8011819c6efa7727858f458ab71c756ce2d3e"
 dependencies = [
- "ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "textwrap 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ansi_term",
+ "atty",
+ "bitflags",
+ "strsim",
+ "textwrap",
+ "unicode-width",
+ "vec_map",
 ]
 
 [[package]]
 name = "difference"
 version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "524cbf6897b527295dff137cec09ecf3a05f4fddffd7dfcd1585403449e74198"
 
 [[package]]
 name = "doc-comment"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fea41bba32d969b513997752735605054bc0dfa92b4c56bf1189f2e174be7a10"
 
 [[package]]
 name = "hx"
 version = "0.3.2"
 dependencies = [
- "ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "assert_cmd 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ansi_term",
+ "assert_cmd",
+ "atty",
+ "clap",
 ]
 
 [[package]]
 name = "libc"
 version = "0.2.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "48450664a984b25d5b479554c29cc04e3150c97aa4c01da5604a2d4ed9151476"
 
 [[package]]
 name = "predicates"
 version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96bfead12e90dccead362d62bb2c90a5f6fc4584963645bc7f71a735e0b0735a"
 dependencies = [
- "difference 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "predicates-core 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "difference",
+ "predicates-core",
 ]
 
 [[package]]
 name = "predicates-core"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06075c3a3e92559ff8929e7a280684489ea27fe44805174c3ebd9328dcb37178"
 
 [[package]]
 name = "predicates-tree"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e63c4859013b38a76eca2414c64911fba30def9e3202ac461a2d22831220124"
 dependencies = [
- "predicates-core 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "treeline 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "predicates-core",
+ "treeline",
 ]
 
 [[package]]
 name = "redox_syscall"
 version = "0.1.50"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "52ee9a534dc1301776eff45b4fa92d2c39b1d8c3d3357e6eb593e0d795506fc2"
 
 [[package]]
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 source = "registry+https://github.com/rust-lang/crates.io-index"
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 dependencies = [
- "redox_syscall 0.1.50 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall",
 ]
 
 [[package]]
 name = "strsim"
 version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb4f380125926a99e52bc279241539c018323fab05ad6368b56f93d9369ff550"
 
 [[package]]
 name = "termion"
 version = "1.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "689a3bdfaab439fd92bc87df5c4c78417d3cbe537487274e9b0b2dce76e92096"
 dependencies = [
- "libc 0.2.47 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.50 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc",
+ "redox_syscall",
+ "redox_termios",
 ]
 
 [[package]]
 name = "textwrap"
 version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "307686869c93e71f94da64286f9a9524c0f308a9e1c87a583de8e9c9039ad3f6"
 dependencies = [
- "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-width",
 ]
 
 [[package]]
 name = "treeline"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7f741b240f1a48843f9b8e0444fb55fb2a4ff67293b50a9179dfd5ea67f8d41"
 
 [[package]]
 name = "unicode-width"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "882386231c45df4700b275c7ff55b6f3698780a650026380e72dabe76fa46526"
 
 [[package]]
 name = "vec_map"
 version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
 
 [[package]]
 name = "wait-timeout"
 version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f200f5b12eb75f8c1ed65abd4b2db8a6e1b138a20de009dacee265a2498f3f6"
 dependencies = [
- "libc 0.2.47 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc",
 ]
 
 [[package]]
 name = "winapi"
 version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "92c1eb33641e276cfa214a0522acad57be5c56b10cb348b3c5117db75f3ac4b0"
 dependencies = [
- "winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
 ]
 
 [[package]]
 name = "winapi-i686-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-
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+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/Cargo.toml b/Cargo.toml
index ee6ab10..ab542f5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -30,6 +30,7 @@ opt-level = 3
 [dependencies]
 clap = "2.31.1"
 ansi_term = "0.11"
+atty = "0.2"
 
 [dev-dependencies]
 assert_cmd = "1.0.1"
diff --git a/src/lib.rs b/src/lib.rs
index 04d1fde..cf839b0 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -15,6 +15,7 @@
 extern crate ansi_term;
 extern crate clap;
 
+use atty::Stream;
 use clap::ArgMatches;
 use std::env;
 use std::error::Error;
@@ -276,6 +277,12 @@ pub fn run(matches: ArgMatches) -> Result<(), Box<dyn Error>> {
             }
         }
 
+        // prevent term color codes being sent to stdout
+        // test: cat Cargo.toml | target/debug/hx | more
+        if !atty::is(Stream::Stdout) {
+            colorize = false;
+        }
+
         // array output mode is mutually exclusive
         if let Some(array) = matches.value_of(ARG_ARR) {
             output_array(array, buf, truncate_len, column_width)?;