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Move escape character processing into library

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And expand to include all 8-bit values.
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Robin Stuart 2017-10-21 12:45:50 +01:00
parent 1fb99fff8c
commit 0314ca65a8
5 changed files with 142 additions and 89 deletions
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docs/manual.txt
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@ -179,12 +179,12 @@ Unicode then you will need to set the appropriate input options as shown in
section 4.11 below.
Non-printing characters can be entered on the command line using the backslash
(\) as an escape character. Permissible characters are shown in the table
below. Note that this only applies on the command line.
(\) as an escape character in combination with the --esc switch. Permissible
characters are shown in the table below.
-------------------------------------------------------------
--------------------------------------------------------------------
Escape Character | ASCII Equivalent | Interpretation
-------------------------------------------------------------
--------------------------------------------------------------------
\0 | 0x00 | Null
\E | 0x04 | End of Transmission
\a | 0x07 | Bell
@ -197,7 +197,9 @@ Escape Character | ASCII Equivalent | Interpretation
\e | 0x1B | Escape
\G | 0x1D | Group Selector
\R | 0x1E | Record Selector
-------------------------------------------------------------
\xNN | 0xNN | Any other 8-bit character
| | where NN is hexadecimal
--------------------------------------------------------------------
Input data can be read directly from file using the -i switch as shown below.
The input file is assumed to be Unicode (UTF-8) formatted unless an alternative
@ -1042,8 +1044,21 @@ Value | Effect
DATA_MODE | Uses full ASCII range interpreted as Latin-1 or binary data.
UNICODE_MODE | Uses pre-formatted UTF-8 input.
GS1_MODE | Encodes GS1 data using FNC1 characters.
ESCAPE_MODE | Process input data for escape sequences
-----------------------------------------------------------------------------
DATA_MODE, UNICODE_MODE and GS1_MODE are mutually exclusive, whereas
ESCAPE_MODE is optional. So, for example, you can set
my_symbol->input_mode = UNICODE_MODE + ESCAPE_MODE;
whereas
my_symbol->input_mode = DATA_MODE + GS1_MODE;
is not valid. Permissable escape sequences are listed in section 4.1.
5.10 Verifying Symbology Availability
-------------------------------------
An additional function available in the API is defined as: