diff options
author | Boris Kolpackov <boris@codesynthesis.com> | 2009-12-10 09:47:29 +0200 |
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committer | Boris Kolpackov <boris@codesynthesis.com> | 2009-12-10 09:47:29 +0200 |
commit | f8edfd22cb45b554a573d2722900196758e9e958 (patch) | |
tree | b2c800c8793f08be287a67ed72517f9cc2831fda /examples/file/README | |
parent | eddefea6ea39e64e9eb5adf74a279a230a63cf5b (diff) |
Scanner-based parsing with support for element erasing
Also implement argv_file_scanner which provides support for reading command
line arguments from the argv array as well as files specified with command
line options. New examples: file. New tests: ctor, erase, file.
Diffstat (limited to 'examples/file/README')
-rw-r--r-- | examples/file/README | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/examples/file/README b/examples/file/README new file mode 100644 index 0000000..289fc64 --- /dev/null +++ b/examples/file/README @@ -0,0 +1,38 @@ +This example shows how to allow the users of your application to supply +options in files in addition to the command line. + +The example consists of the following files: + +options.cli + Command line interface description in the CLI language. + +options.hxx +options.ixx +options.cxx + Command line interface implementation in C++. These files are generated + by the CLI compiler from options.cli using the following command line: + + cli --generate-file-scanner hello.cli + + We use the --generate-file-scanner CLI compiler option to include the + argv_file_scanner scanner implementation which provides support for + reading options from files in addition to the command line. + +driver.cxx + Driver for the example. It first creates the argv_file_scanner object + and indicates that the values for the --options-file option should be + recognized as files containing additional options. It then passes this + scanner object to the option class which parses the command line. The + driver then prints the option values. + +test.ops + Sample options file. + +To run this example you can try the following command line: + +$ ./driver --verbose 2 --val 1 --options-file test.ops --val 4 + +The output will be: + +verbosity: 5 +values: 1 2 3 4 |