[SCM] gawk branch, feature/bwk-csv, updated. gawk-4.1.0-4897-g2571e2d5

[Arnold Robbins]

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The branch, feature/bwk-csv has been updated
       via  2571e2d55f4871bad41e4237e47442631cb2ebe0 (commit)
      from  1ee8627c7bb42dad235c66e62050bf61f59cbb6e (commit)

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- Log -----------------------------------------------------------------
http://git.sv.gnu.org/cgit/gawk.git/commit/?id=2571e2d55f4871bad41e4237e47442631cb2ebe0

commit 2571e2d55f4871bad41e4237e47442631cb2ebe0
Author: Arnold D. Robbins <arnold@skeeve.com>
Date:   Tue Aug 30 21:01:55 2022 +0300

    Grow field buffer for CSV parsing.

diff --git a/ChangeLog b/ChangeLog
index 9090eaca..6cd26809 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2022-08-30         Arnold D. Robbins     <arnold@skeeve.com>
+
+       * field.c (comma_parse_field): Add resizing of new field buffer;
+       No Arbitrary Limits!
+
 2022-08-29         Arnold D. Robbins     <arnold@skeeve.com>
 
        * field.c (comma_parse_field, set_comma_field): New functions.
diff --git a/field.c b/field.c
index 755a3fd4..be9f1fb0 100644
--- a/field.c
+++ b/field.c
@@ -813,6 +813,15 @@ comma_parse_field(long up_to,      /* parse only up to 
this field number */
                while (*scan != comma && scan < end) {
                        if (*scan == '"') {
                                for (scan++; scan < end;) {
+                                       // grow buffer if needed
+                                       if (new_end >= newfield + buflen) {
+                                               size_t offset = buflen;
+
+                                               buflen *= 2;
+                                               erealloc(newfield, char *, 
buflen, "comma_parse_field");
+                                               new_end = newfield + offset;
+                                       }
+
                                        if (*scan == '"' && scan[1] == '"') {   
// "" -> "
                                                *new_end++ = '"';
                                                scan += 2;
@@ -821,7 +830,6 @@ comma_parse_field(long up_to,       /* parse only up to 
this field number */
                                                scan++;
                                                break;
                                        } else {
-                                               // grow buffer if needed
                                                *new_end++ = *scan++;
                                        }
                                }
@@ -829,6 +837,13 @@ comma_parse_field(long up_to,      /* parse only up to 
this field number */
                                // unquoted field
                                while (*scan != comma && scan < end) {
                                        // grow buffer if needed
+                                       if (new_end >= newfield + buflen) {
+                                               size_t offset = buflen;
+
+                                               buflen *= 2;
+                                               erealloc(newfield, char *, 
buflen, "comma_parse_field");
+                                               new_end = newfield + offset;
+                                       }
                                        *new_end++ = *scan++;
                                }
                        }

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog |  5 +++++
 field.c   | 17 ++++++++++++++++-
 2 files changed, 21 insertions(+), 1 deletion(-)


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