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Diffstat (limited to 'support/texaccents/grepl.inc')
-rw-r--r-- | support/texaccents/grepl.inc | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/support/texaccents/grepl.inc b/support/texaccents/grepl.inc new file mode 100644 index 0000000000..76ad8bb0f0 --- /dev/null +++ b/support/texaccents/grepl.inc @@ -0,0 +1,63 @@ +* Function GREPL +* replaces all the items in SET1 with all the items in SET2 +* SET1/2 must have the form "ITEM ITEM ITEM " -- space at the end +* guido.milanese@unicatt.it +* requires "repl.inc" +* 31.07.2022 +################################################################# +# MIT License - Copyright (c) 2022 Guido Milanese +# See file LICENSE in this package +################################################################# + define("grepl(Pass,Set1,Set2)datum,I,N,T1,T2,A1,A2") +-include "repl.inc" + :(grepl_end) +grepl +grepl_bg + T1 = TABLE() + T2 = TABLE() + N = 0 +grepl1 N = N + 1 + Set1 ? break(' ') . datum len(1) rem . Set1 :f(grepl1_nd) + T1[N] = datum :(grepl1) +grepl1_nd + + N = 0 +grepl2 N = N + 1 + Set2 ? break(' ') . datum len(1) rem . Set2 :f(grepl2_nd) + T2[N] = datum :(grepl2) +grepl2_nd + A1 = convert(T1,"ARRAY") + A2 = convert(T2,"ARRAY") +grepl3_bg I = I + 1 + Pass = repl(Pass,A1[I,2],A2[I,2]) :S(grepl3_bg)F(grepl3_nd) +grepl3_nd +grepl_rt grepl = Pass :(return) +grepl_end + +********************************************************************* +* This function, as Phil Budne's "repl", replaces string/string +* but, as standard "replace", can replace a set with another set. +* In this way also Unicode chars can be replaced with no limitation +* since they are treated as strings. +* Text = "aiuole" +* S1 = "a e i o u " +* S2 = "1 2 3 4 5 " +* Text2 = grepl(Text,S1,S2) +* will output: "1354l2" +* But also: +* Text = "aiuole" +* S1 = "a e i o u " +* S2 = "ā ē ī ō ū " +* will output: "āīūōlē" +* the standard REPLACE ("aeiou" / "āēīōū") will fail +* because Unicode chars (>127 ASCII) do not have the same length of chars <127. +* Step by step: +* create two tables for sets: T1 and T2 +* feed the tables scanning thes two sets (items must be separeted by spaces) +* convert from tables to arrays +* use REPL converting string/string in PASS: +* each item of SET1 is replaced by the corresponding item in S2 +* if SET2 is shorter the exceeding item in SET1 is left unchanged +* if SET1 is shorter the exceeding item in SET2 is not used +* Please notice that separating items by spaces makes it possible to substitute +* also sets of strings, such as e.g. LaTeX accents. |