From d3ebc21eadc5c32edc1ffaa026f51c260c2536fe Mon Sep 17 00:00:00 2001
From: Egor Tensin <Egor.Tensin@gmail.com>
Date: Wed, 21 Sep 2016 19:11:48 +0300
Subject: add replace_word, swap_files

---
 .bash_utils/file.sh | 35 +++++++++++++++++++++++++++++++++++
 .bash_utils/text.sh | 14 ++++++++++++++
 2 files changed, 49 insertions(+)
 create mode 100644 .bash_utils/file.sh

diff --git a/.bash_utils/file.sh b/.bash_utils/file.sh
new file mode 100644
index 0000000..0321833
--- /dev/null
+++ b/.bash_utils/file.sh
@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+
+# Copyright (c) 2016 Egor Tensin <Egor.Tensin@gmail.com>
+# This file is part of the "Cygwin configuration files" project.
+# For details, see https://github.com/egor-tensin/cygwin-home.
+# Distributed under the MIT License.
+
+swap_files() (
+    set -o errexit -o nounset -o pipefail
+
+    if [ "$#" -ne 2 ]; then
+        echo "usage: ${FUNCNAME[0]} PATH1 PATH2" >&2
+        return 1
+    fi
+
+    local path1="$1"
+    local path2="$2"
+
+    if [ ! -f "$path1" ]; then
+        echo "${FUNCNAME[0]}: must be a regular file: $path1" >&2
+        return 1
+    fi
+
+    if [ ! -f "$path2" ]; then
+        echo "${FUNCNAME[0]}: must be a regular file: $path2" >&2
+        return 1
+    fi
+
+    local tmp_path
+    tmp_path="$( mktemp "$( dirname "$path1" )/XXX" )"
+
+    mv "$path1" "$tmp_path"
+    mv "$path2" "$path1"
+    mv "$tmp_path" "$path2"
+)
diff --git a/.bash_utils/text.sh b/.bash_utils/text.sh
index 5a678ee..cb34073 100644
--- a/.bash_utils/text.sh
+++ b/.bash_utils/text.sh
@@ -25,3 +25,17 @@ lint() {
 doslint() {
     trim "$@" && trimdoseol "$@" && doseol "$@"
 }
+
+replace_word() (
+    set -o errexit -o nounset -o pipefail
+
+    if [ "$#" -lt 3 ]; then
+        echo "usage: ${FUNCNAME[0]} OLD NEW PATH [PATH...]" >&2
+        return 1
+    fi
+
+    local old="$1"
+    local new="$2"
+
+    shift && shift && sed --binary --in-place "s/\\b$old\\b/$new/g" "$@"
+)
-- 
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