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authorMattias Andrée <maandree@kth.se>2021-02-27 13:13:55 +0100
committerMattias Andrée <maandree@kth.se>2021-02-27 13:13:55 +0100
commit5635aa0fe22734cd4330eb4aa330b60d2e1b109f (patch)
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parentm (diff)
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Remove -e flag, remove long options, start rewriting in C, add support for changing shell
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to '')
-rw-r--r--README60
1 files changed, 33 insertions, 27 deletions
diff --git a/README b/README
index a703e75..ec06c25 100644
--- a/README
+++ b/README
@@ -2,15 +2,18 @@ NAME
gpp - Bash-based preprocessor for anything
SYNOPSIS
- gpp [OPTION]...
+ gpp [-D name[=value]] [-f file | [-i input-file]
+ [-o output-file]] [-n count] [-s symbol] [-u [-u]]
+ [shell [argument] ...]
ETYMOLOGY
gpp stands for General Preprocessor.
DESCRIPTION
gpp lets a developer embed directives written in GNU
- Bash into any text document. These directives are used
- to automate the writting of parts of the document.
+ Bash (this can be changed) into any text document.
+ These directives are used to automate the writting of
+ parts of the document.
The preprocessing directives start with a symbol
(or text string) specified by the developer. By default
@@ -41,40 +44,43 @@ DESCRIPTION
echo verbatim.
OPTIONS
- -s, --symbol SYMBOL
- Set the prefix symbol for preprocessor directives.
- Defaults to @.
+ -D name=value
+ Set the environment variable name to hold
+ the value value.
- -e, --encoding ENCODING
- Specifies the encoding of the file.
-
- -n, --iterations N
- Process the file recursively N times. Defaults to 1 time.
+ -D name
+ Set the environment variable name to hold
+ the value 1.
- -u, --unshebang
- Clear the shebang line, remove it if this flag
- is used twice. If used twice, an empty line
- will be inserted after the new first line.
+ -f file
+ Equivalent to -i FILE -o FILE.
- -i, --input FILE
+ -i input-file
Select file to process. Defaults to /dev/stdin.
- -o, --output FILE
+ -n count
+ Process the file recursively count times.
+ Defaults to 1 time.
+
+ -o output-file
Select output file. Defaults to /dev/stdout.
- -f, --file FILE
- Equivalent to -i FILE -o FILE.
+ -s symbol
+ Set the prefix symbol for preprocessor directives.
+ Defaults to @.
- -D, --export NAME=VALUE
- Set the environment variable NAME to hold
- the value VALUE.
+ -u
+ Clear the shebang line, remove it if this flag
+ is used twice. If used twice, an empty line
+ will be inserted after the new first line.
- -D, --export NAME
- Set the environment variable NAME to hold
- the value 1.
+OPERANDS
+ shell
+ The shell to run instead of bash. The shell
+ must be compatible with POSIX shell.
- Short options must be joined. The value of a flag must
- be in a separate argument from the flag itself.
+ argument ...
+ Command line arguments for the shell.
EXAMPLES
Conditional hello world