Yesterday I have written first code in Bash Script 
. It was a pre-commit hook which checks my Javascript files against bugs using JSLint. To install it, please download JSLint from http://www.javascriptlint.com/ and copy executable file (I renamed it from jsl to jslint) and config file to:
your_project/.git/hooks
and put following code into the pre-commit file which should be already there.
BTW, to skip it, do:
git commit --no-verify -m "Message"
#!/bin/sh declare prev_file="" declare prev_line="" declare out declare cmd=".git/hooks/jslint -conf .git/hooks/jslint.conf" declare -i interrupt=0 if git-rev-parse --verify HEAD >/dev/null 2>&1; then against=HEAD else against=4b825dc642cb6eb9a060e54bf8d69288fbee4904 fi #take all changed files, example (1 modified file): # Array[0]: M # Array[1]: assets/css/styles.css for FILE in `git diff --cached --name-status` ; do #if file exist if [ -e $FILE ] then #check only JS files if [[ $FILE == *.js ]] then #if file has been modified if [ "$prev_file" == "M" ] then cmd="$cmd -process $FILE" fi fi fi prev_file=$FILE; done #execute command and check if any mistakes has been made out=$( eval "$cmd" ); #check if errors == 0 and warrnings == 0 if [ out ] then for LINE in $out; do if [ "$LINE" = "error(s)," ] then if [ "$prev_line" != "0" ] then interrupt=1 fi fi if [ "$LINE" = "warning(s)" ] then if [ "$prev_line" != "0" ] then interrupt=1 fi fi prev_line=$LINE; done fi echo "$out\n\n" #display error messages and interrupt commit if [ "$interrupt" == "1" ] then exit 1 fi exit
Here is my config file:
# # Configuration File for JavaScript Lint 0.3.0 # Developed by Matthias Miller (http://www.JavaScriptLint.com) # # This configuration file can be used to lint a collection of scripts, or to enable # or disable warnings for scripts that are linted via the command line. # ### Warnings # Enable or disable warnings based on requirements. # Use "+WarningName" to display or "-WarningName" to suppress. # +no_return_value # function {0} does not always return a value +duplicate_formal # duplicate formal argument {0} +equal_as_assign # test for equality (==) mistyped as assignment (=)?{0} +var_hides_arg # variable {0} hides argument +redeclared_var # redeclaration of {0} {1} +anon_no_return_value # anonymous function does not always return a value +missing_semicolon # missing semicolon +meaningless_block # meaningless block; curly braces have no impact +comma_separated_stmts # multiple statements separated by commas (use semicolons?) +unreachable_code # unreachable code +missing_break # missing break statement +missing_break_for_last_case # missing break statement for last case in switch +comparison_type_conv # comparisons against null, 0, true, false, or an empty string allowing implicit type conversion (use === or !==) +inc_dec_within_stmt # increment (++) and decrement (--) operators used as part of greater statement +useless_void # use of the void type may be unnecessary (void is always undefined) +multiple_plus_minus # unknown order of operations for successive plus (e.g. x+++y) or minus (e.g. x---y) signs +use_of_label # use of label +block_without_braces # block statement without curly braces +leading_decimal_point # leading decimal point may indicate a number or an object member +trailing_decimal_point # trailing decimal point may indicate a number or an object member +octal_number # leading zeros make an octal number +nested_comment # nested comment +misplaced_regex # regular expressions should be preceded by a left parenthesis, assignment, colon, or comma +ambiguous_newline # unexpected end of line; it is ambiguous whether these lines are part of the same statement +empty_statement # empty statement or extra semicolon -missing_option_explicit # the "option explicit" control comment is missing +partial_option_explicit # the "option explicit" control comment, if used, must be in the first script tag +dup_option_explicit # duplicate "option explicit" control comment +useless_assign # useless assignment +ambiguous_nested_stmt # block statements containing block statements should use curly braces to resolve ambiguity +ambiguous_else_stmt # the else statement could be matched with one of multiple if statements (use curly braces to indicate intent) +missing_default_case # missing default case in switch statement +duplicate_case_in_switch # duplicate case in switch statements +default_not_at_end # the default case is not at the end of the switch statement +legacy_cc_not_understood # couldn't understand control comment using /*@keyword@*/ syntax +jsl_cc_not_understood # couldn't understand control comment using /*jsl:keyword*/ syntax +useless_comparison # useless comparison; comparing identical expressions +with_statement # with statement hides undeclared variables; use temporary variable instead +trailing_comma_in_array # extra comma is not recommended in array initializers +assign_to_function_call # assignment to a function call +parseint_missing_radix # parseInt missing radix parameter ### Output format # Customize the format of the error message. # __FILE__ indicates current file path # __FILENAME__ indicates current file name # __LINE__ indicates current line # __ERROR__ indicates error message # # Visual Studio syntax (default): +output-format ======================================================================\n__FILE__, line: __LINE__\n----------------------------------------------------------------------\n__ERROR__ # Alternative syntax: #+output-format __FILE__:__LINE__: __ERROR__ ### Context # Show the in-line position of the error. # Use "+context" to display or "-context" to suppress. # +context ### Semicolons # By default, assignments of an anonymous function to a variable or # property (such as a function prototype) must be followed by a semicolon. # +lambda_assign_requires_semicolon ### Control Comments # Both JavaScript Lint and the JScript interpreter confuse each other with the syntax for # the /*@keyword@*/ control comments and JScript conditional comments. (The latter is # enabled in JScript with @cc_on@). The /*jsl:keyword*/ syntax is preferred for this reason, # although legacy control comments are enabled by default for backward compatibility. # +legacy_control_comments ### JScript Function Extensions # JScript allows member functions to be defined like this: # function MyObj() { /*constructor*/ } # function MyObj.prototype.go() { /*member function*/ } # # It also allows events to be attached like this: # function window::onload() { /*init page*/ } # # This is a Microsoft-only JavaScript extension. Enable this setting to allow them. # -jscript_function_extensions ### Defining identifiers # By default, "option explicit" is enabled on a per-file basis. # To enable this for all files, use "+always_use_option_explicit" +always_use_option_explicit # Define certain identifiers of which the lint is not aware. # (Use this in conjunction with the "undeclared identifier" warning.) # # Common uses for webpages might be: #+define window #+define document +define jQuery +define Backbone +define _ +define ModuleMap +define ModuleWindows +define ModuleData ### Files # Specify which files to lint # Use "+recurse" to enable recursion (disabled by default). # To add a set of files, use "+process FileName", "+process Folder\Path\*.js", # or "+process Folder\Path\*.htm". # #+process .git/hooks/jsl-test.js
I’m aware that my code just work, and can be improved, so feel free to post some suggestions.
