From cca94a4f6e8acc20eacb8219b5f910e89b312802 Mon Sep 17 00:00:00 2001
From: Ian Kelling <ian@iankelling.org>
Date: Mon, 9 Jun 2014 11:07:58 -0700
Subject: [PATCH] change semantics to include all ln cases, but require option

---
 lnf          | 31 ++++++++++++++++++++-----------
 lnf-function | 31 ++++++++++++++++++++-----------
 test/test    | 25 +++++++++++++++----------
 3 files changed, 55 insertions(+), 32 deletions(-)

diff --git a/lnf b/lnf
index bf49761..104c901 100755
--- a/lnf
+++ b/lnf
@@ -3,16 +3,25 @@
 # This program is under GPL v. 3 or later, see <http://www.gnu.org/licenses/>
 
 lnf() {
-    local help="lnf [--help] LN_ARGUMENTS...
+    local help="lnf [--help] [-T] LN_ARGUMENT...
 Create symlinks conveniently and forcefully.
+
 Remove existing file/links using trash-put or rm -rf if it is not available.
 Create directory if needed. Small change to ln argument semantics: for 2 arguments,
-the second is the link, never a directory to put the link in.
-LN_ARGUMENTS are passed to ln -s --, meaning no ln option arguments are supported."
-    if [[ $1 == --help ]]; then
+the second argument is a directory unless -T is passed. This removes ambiguity of
+replacing a file but not a directory. No ln option arguments are supported."
+    
+    if [[ $1 == --help || $# -eq 0 ]]; then
         echo "$help"
         return 0
     fi
+
+    local nodir=false
+    if [[ $1 == -T ]]; then
+        nodir=true
+        shift
+    fi
+    
     
     local remove x
     if type -P dircolors >/dev/null; then
@@ -21,7 +30,13 @@ LN_ARGUMENTS are passed to ln -s --, meaning no ln option arguments are supporte
         remove="rm -rf"
     fi
     
-    if [[ $# -ge 3 ]]; then
+    if $nodir && [[ $# -eq 2 ]]; then
+        if [[ -e "$2" || -L "$2" ]]; then
+            $remove "$2"
+        elif [[ ! -d "$2/.." ]]; then
+            mkdir -p "$2/.."
+        fi
+    elif [[ $# -ge 2 ]]; then
         if [[ -d ${!#} ]]; then
             local oldcwd=$PWD
             cd ${!#} # last arg
@@ -36,12 +51,6 @@ LN_ARGUMENTS are passed to ln -s --, meaning no ln option arguments are supporte
         else
             mkdir -p "${!#}"
         fi
-    elif [[ $# -eq 2 ]]; then
-        if [[ -e "$2" || -L "$2" ]]; then
-            $remove "$2"
-        elif [[ ! -d "$2/.." ]]; then
-            mkdir -p "$2/.."
-        fi
     elif  [[ $# -eq 1 ]]; then
         [[ -e "${1##*/}" || -L "${1##*/}" ]] && $remove "${1##*/}"
     fi
diff --git a/lnf-function b/lnf-function
index 7bc88f0..61478e7 100644
--- a/lnf-function
+++ b/lnf-function
@@ -3,16 +3,25 @@
 # This program is under GPL v. 3 or later, see <http://www.gnu.org/licenses/>
 
 lnf() {
-    local help="lnf [--help] LN_ARGUMENTS...
+    local help="lnf [--help] [-T] LN_ARGUMENT...
 Create symlinks conveniently and forcefully.
+
 Remove existing file/links using trash-put or rm -rf if it is not available.
 Create directory if needed. Small change to ln argument semantics: for 2 arguments,
-the second is the link, never a directory to put the link in.
-LN_ARGUMENTS are passed to ln -s --, meaning no ln option arguments are supported."
-    if [[ $1 == --help ]]; then
+the second argument is a directory unless -T is passed. This removes ambiguity of
+replacing a file but not a directory. No ln option arguments are supported."
+    
+    if [[ $1 == --help || $# -eq 0 ]]; then
         echo "$help"
         return 0
     fi
+
+    local nodir=false
+    if [[ $1 == -T ]]; then
+        nodir=true
+        shift
+    fi
+    
     
     local remove x
     if type -P dircolors >/dev/null; then
@@ -21,7 +30,13 @@ LN_ARGUMENTS are passed to ln -s --, meaning no ln option arguments are supporte
         remove="rm -rf"
     fi
     
-    if [[ $# -ge 3 ]]; then
+    if $nodir && [[ $# -eq 2 ]]; then
+        if [[ -e "$2" || -L "$2" ]]; then
+            $remove "$2"
+        elif [[ ! -d "$2/.." ]]; then
+            mkdir -p "$2/.."
+        fi
+    elif [[ $# -ge 2 ]]; then
         if [[ -d ${!#} ]]; then
             local oldcwd=$PWD
             cd ${!#} # last arg
@@ -36,12 +51,6 @@ LN_ARGUMENTS are passed to ln -s --, meaning no ln option arguments are supporte
         else
             mkdir -p "${!#}"
         fi
-    elif [[ $# -eq 2 ]]; then
-        if [[ -e "$2" || -L "$2" ]]; then
-            $remove "$2"
-        elif [[ ! -d "$2/.." ]]; then
-            mkdir -p "$2/.."
-        fi
     elif  [[ $# -eq 1 ]]; then
         [[ -e "${1##*/}" || -L "${1##*/}" ]] && $remove "${1##*/}"
     fi
diff --git a/test/test b/test/test
index 218b67c..afbb630 100755
--- a/test/test
+++ b/test/test
@@ -11,14 +11,14 @@
 # 2 arguments, test that a file in the link location is removed and replaed with a link
 case1() {
     touch b
-    lnf a b
+    lnf -T a b
     [[ -L b ]] 
 }
 
 # 2 arguments, test that directory in link location is removed and replaced with a link
 case2() {
     mkdir b
-    lnf a b
+    lnf -T a b
     [[ -L b ]] 
 }
 
@@ -40,20 +40,25 @@ case4() {
     [[ -L a/b && -L a/c && -L a/d ]] 
 }
 
+# 2 arguments, test that link is made correctly
+case5() {
+    mkdir b
+    lnf a b
+    [[ -L b/a ]] 
+}
+
+
+
 cleanup() {
     rm -rf *
 }
 
 
 docases() {
-    case1
-    cleanup
-    case2
-    cleanup
-    case3
-    cleanup
-    case4
-    cleanup
+    for x in {1..5}; do
+        case$x
+        cleanup
+    done
 }
 
 source ${0%/*}/../lnf-function
-- 
2.30.2