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CODE128: Add minimal encodation algorithm (non-extended ASCII only)

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from ZXing (props Alex Geller) - about 25-60% slower depending on
  data & stack heavy but does improve some outcomes when FNC1s
  present (GS1_MODE or manual) although not much else it appears
  (the previous algorithm was very good), but has a logical clarity
  the other lacked - funcs `c128_dxsmooth()` etc shared with
  CODE16K now moved there and renamed as `c16k_`;
  also fix extended char latching when exactly 4 extended chars
  at end
  also manual code set switching now honoured exactly even if
  immediate shift required;
manual: make explicit that AI "(00)" and "(01)" prefixes added by
  Zint are HRT-only
general: add `extern "C"` wrappers to a few header files
This commit is contained in:
gitlost
2024-09-07 12:44:16 +01:00
parent 10747d6385
commit 93c3e27fba
23 changed files with 1017 additions and 958 deletions
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14
docs/manual.pmd
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@@ -3197,7 +3197,7 @@ zint -b 16 --gs1parens -d "(01)98898765432106(3202)012345(15)991231"
![`zint -b EAN14 --compliantheight -d "9889876543210"`](images/ean14.svg){.lin}
A shorter version of GS1-128 which encodes GTIN data only. A 13-digit number is
required. The GTIN check digit and AI (01) are added by Zint.
required. The GTIN check digit and HRT-only AI "(01)" are added by Zint.
#### 6.1.10.5 NVE-18 (SSCC-18)
@@ -3207,7 +3207,7 @@ required. The GTIN check digit and AI (01) are added by Zint.
A variation of Code 128 the 'Nummer der Versandeinheit' standard, also known as
SSCC-18 (Serial Shipping Container Code), includes both a visible modulo-10 and
a hidden modulo-103 check digit. NVE-18 requires a 17-digit numerical input.
Check digits and AI (00) are added by Zint.
Check digits and HRT-only AI "(00)" are added by Zint.
#### 6.1.10.6 HIBC Code 128
@@ -3287,9 +3287,9 @@ GS1 DataBar symbol is to be printed with a 2D component as specified in ISO/IEC
"0950110153001"`](images/dbar_omn.svg){.lin}
Previously known as RSS-14 this standard encodes a 13-digit item code. A check
digit and Application Identifier of (01) are added by Zint. (A 14-digit code
that appends the check digit may be given, in which case the check digit will be
verified.)
digit and HRT-only Application Identifier of "(01)" are added by Zint. (A
14-digit code that appends the check digit may be given, in which case the check
digit will be verified.)
GS1 DataBar Omnidirectional symbols should have a height of 33 or greater. To
produce a GS1 DataBar Truncated symbol set the symbol height to a value between
@@ -3307,8 +3307,8 @@ Previously known as RSS Limited this standard encodes a 13-digit item code and
can be used in the same way as GS1 DataBar Omnidirectional above. GS1 DataBar
Limited, however, is limited to data starting with digits 0 and 1 (i.e. numbers
in the range 0 to 1999999999999). As with GS1 DataBar Omnidirectional a check
digit and Application Identifier of (01) are added by Zint, and a 14-digit code
may be given in which case the check digit will be verified.
digit and HRT-only Application Identifier of "(01)" are added by Zint, and a
14-digit code may be given in which case the check digit will be verified.
#### 6.1.11.3 GS1 DataBar Expanded