From 29409b257d9144010bd608afc19f66ee2fbaa337 Mon Sep 17 00:00:00 2001
From: Tyge Løvset <tylo@norceresearch.no>
Date: Sat, 5 Feb 2022 23:21:51 +0100
Subject: Switched to heavily modified version of Rob Pike's plan9 regexp9. ->
 now renamed to cregex, with new API.

---
 examples/regex1.c      |  6 ++++--
 examples/regex2.c      | 21 ++++++++++-----------
 examples/regex_match.c | 18 +++++++++---------
 3 files changed, 23 insertions(+), 22 deletions(-)

(limited to 'examples')

diff --git a/examples/regex1.c b/examples/regex1.c
index 02d0f5f4..894fe2b1 100644
--- a/examples/regex1.c
+++ b/examples/regex1.c
@@ -10,7 +10,7 @@ int main(int argc, char* argv[])
     c_auto (cstr, input)
     c_auto (cregex, float_expr)
     {
-        float_expr = cregex_new("[+-]?[0-9]+(\\.[0-9]*)?|\\.[0-9]+");
+        float_expr = cregex_new("^[+-]?[0-9]+((\\.[0-9]*)?|\\.[0-9]+)$", 0);
         // Until "q" is given, ask for another number
         while (true)
         {
@@ -21,10 +21,12 @@ int main(int argc, char* argv[])
             if (cstr_equals(input, "q"))
                 break;
             
-            if (cregex_matches(&float_expr, input.str))
+            if (cregex_find(&float_expr, input.str, 0, NULL, 0) > 0)
                 printf("Input is a float\n");
             else
                 printf("Invalid input : Not a float\n");
         }
     }
 }
+
+#include "../src/cregex.c"
\ No newline at end of file
diff --git a/examples/regex2.c b/examples/regex2.c
index 512f7e58..45de9aba 100644
--- a/examples/regex2.c
+++ b/examples/regex2.c
@@ -5,29 +5,28 @@
 int main()
 {
     const char* inputs[] = {"date: 2024-02-29 leapyear day", "https://en.cppreference.com/w/cpp/regex/regex_search", "!123abcabc!"};
-    const char* patterns[] = {"([0-9]{4})-(1[0-2]|0[1-9])-(3[01]|[12][0-9]|0[1-9])",
-                              "(https?:\\/\\/|ftp:\\/\\/|www\\.)([0-9A-Za-z-@:%_+~#=]+\\.)+([a-z]{2,3})(\\/[\\/0-9A-Za-z-\\.@:%_+~#=\\?&]*)?",
+    const char* patterns[] = {"(\\d\\d\\d\\d)-(1[0-2]|0[1-9])-(3[01]|[12][0-9]|0[1-9])",
+                              "(https?://|ftp://|www\\.)([0-9A-Za-z@:%_+~#=-]+\\.)+([a-z][a-z][a-z]?)(/[/0-9A-Za-z\\.@:%_+~#=\\?&-]*)?",
                               "!((abc|123)+)!",
     };
     c_forrange (i, c_arraylen(inputs))
     {
         c_auto (cregex, re)
         {
-            re = cregex_new(patterns[i]);
-            csview m;
+            re = cregex_new(patterns[i], 0);
+            cregmatch m[20];
             printf("input: %s\n", inputs[i]);
-            if (cregex_find_sv(&re, inputs[i], &m))
+            if (cregex_find(&re, inputs[i], 20, m, 0) > 0)
             {
-                c_forrange (j, cregex_capture_size(re))
+                c_forrange (j, cregex_captures(re))
                 {
-                    csview cap; 
-                    if (cregex_capture_sv(&re, j, &cap))
-                        printf("  submatch %zu: " c_PRIsv "\n", j, c_ARGsv(cap));
-                    else
-                        printf("  FAILED index %zu\n", j);
+                    csview cap = {m[j].str, m[j].len}; 
+                    printf("  submatch %zu: " c_PRIsv "\n", j, c_ARGsv(cap));
                 }
                 puts("");
             }
         }
     }
 }
+
+#include "../src/cregex.c"
diff --git a/examples/regex_match.c b/examples/regex_match.c
index 17e3355f..be3c0682 100644
--- a/examples/regex_match.c
+++ b/examples/regex_match.c
@@ -3,8 +3,6 @@
 #include <stc/cregex.h>
 #include <stc/crandom.h>
 #define i_val double
-#define i_type Vecu64
-#include <stc/cstack.h>
 #include <time.h>
 
 
@@ -18,18 +16,20 @@ int main()
 
     c_auto (cregex, re)
     {
-        re = cregex_new("[+-]?([0-9]*\\.)?[0-9]+([Ee][-+]?[0-9]+)?");
-        cregex_match match;
-        if (cregex_find(&re, s, &match)) {
-            printf("Found digits at position %zu-%zu\n", match.start, match.end);
+        int res = cregex_compile(&re, "[+-]?([0-9]*\\.)?\\d+([Ee][+-]?\\d+)?", 0);
+        printf("%d\n", res);
+        cregmatch m[10];
+        if (cregex_find(&re, s, 10, m, 0) > 0) {
+            printf("Found digits at position %zu-%zu\n", m[0].str - s, m[0].str - s + m[0].len);
         } else {
             printf("Could not find any digits\n");
         }
 
-        csview sv = {0};
-        while (cregex_find_next_sv(&re, s, &sv)) {
-            printf(c_PRIsv " ; ", c_ARGsv(sv));
+        while (cregex_find(&re, s, 1, m, creg_next) > 0) {
+            printf("%.*s ; ", m[0].len, m[0].str);
         }
         puts("");
     }
 }
+
+#include "../src/cregex.c"
-- 
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