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#!/bin/bash
# Author:    Rainer Mueller <raimue@codingfarm.de>
# Version:   1.6
# License:   Public Domain

usage() {
    cat <<END<<END
Usage: $argv0 [options] [files...]

Options:
    -h, --help          display this help
    -l, --lang <lang>   set language of the paste
    -p, --private       make paste private

If --lang is not specified, this script will try to determine the type of each
file automatically based on the extension. If no files are given on the
command line it reads from standard input.
ENDEND
}

map-lang() {
    local file="$1"
    local ext=${file##*.}
    local lang=""

    # Based on file name
    case $ext in
        css|d|diff|go|ini|io|java|lisp|lua|nu|php|scala|sql|tex)
            lang=$ext
            ;;
        as)
            lang=actionscript
            ;;
        c|cpp|cc|cxx|h|hpp|hh|hxx)
            lang=c++
            ;;
        clj)
            lang=clojure
            ;;
        conf)
            lang=apache
            ;;
        cs)
            lang=csharp
            ;;
        erb|rhtml)
            lang=html_rails
            ;;
        erl)
            lang=erlang
            ;;
        f|for|f90|f95)
            lang=fortran
            ;;
        js)
            lang=javascript
            ;;
        htm|html|xml)
            lang=html
            ;;
        hs)
            lang=haskell
            ;;
        lhs)
            lang=literate_haskell
            ;;
        m|mm)
            lang=objective-c++
            ;;
        Makefile|makefile|GNUmakefile)
            lang=makefile
            ;;
        py)
            lang=python
            ;;
        pas)
            lang=pascal
            ;;
        pl)
            lang=perl
            ;;
        rb)
            lang=ruby_on_rails
            ;;
        scm|ss)
            lang=scheme
            ;;
        *sh)
            lang=shell-unix-generic
            ;;
        tpl)
            lang=smarty
            ;;
        yaml|yml)
            lang=yaml
            ;;
    esac

    if [ "$lang" != "" ]; then
        echo $lang
        return
    fi

    # Executable files are usually shell scripts (who would pastie a binary?)
    if [ -x "$file" ]; then
        echo shell-unix-generic
        return
    fi
}

# default settings
private=0
lang="auto"
file="-"
files=()

# save name of the script
argv0=$(basename $0)

# parse arguments
while [ $# -gt 0 ]; do
    case $1 in
        -h|--help)
            usage
            exit 1
            ;;
        -l|--lang)
            shift
            lang=$1
            ;;
        -p|--private)
            private=1
            ;;
        *)
            # Everything else is a file
            files=( ${files[@]} $1 )
            ;;
    esac
    shift
done

# read files
if [ ${#files[@]} -gt 0 ]; then
    # Create temporary file
    tmpfile=$(mktemp -t $argv0.XXXXX)
    trap "rm -f $tmpfile" EXIT

    for f in ${files[@]}; do
        if [ ! -r "$f" ]; then
            echo "$f: cannot read file" >&2
            exit 1
        fi
        if [ ! -f "$f" ]; then
            echo "$f: not a regular file" >&2
            exit 1
        fi
        if [ "$lang" == "auto" ]; then
            flang=$(map-lang "$f")
        fi
        if [ ${#files[@]} -gt 1 ]; then
            if [ -z "$flang" ]; then
                echo "## $f" >> $tmpfile
            else
                echo "## $f [$flang]" >> $tmpfile
            fi
        else
            if [ "$lang" == "auto" ]; then
                lang=$flang
            fi
        fi
        cat $f >> $tmpfile
    done
    file="$tmpfile"
fi

# pastie now!

if [ "$lang" == "auto" ]; then
    lang="plain_text"
fi

auth='burger'
# Enable this in case the authorization token ever changes
#REGEX="\$('paste_authorization')\.value='\(.*\)';"
#auth=$(curl -s -L http://pastie.org/pastes/new \
#        | sed -e "/$REGEX/!d" -e "/$REGEX/s/$REGEX/\1/")

url=$(curl http://pastie.org/pastes \
    -F "paste[parser]=$lang" \
    -F "paste[body]=<$file" \
    -F "paste[restricted]=$private" \
    -F "paste[authorization]=$auth" \
    -s -L -o /dev/null -w "%{url_effective}")

echo "$url"