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strparse: string parsing helper functions
Designed to aid converting off from sscanf parsers. sscanf is hard to use right, easy to mess up and often makes for sloppy error checking. The new parsers allow more exact and pedandic parsing. This new set of functions should be possible to use (and extend) and switch over other libcurl parser code to use going forward. Adapts the following to use the new functions: - altsvc.c - hsts.c - http_aws_sigv4.c Bonus: fewer memory copies, fewer stack buffers. Test: Unit test1664 Docs: docs/internals/STRPARSE.md Closes #15692
This commit is contained in:
Daniel Stenberg
parent
ff5091aa9f
commit
d5c738c608
20 changed files with 912 additions and 163 deletions
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@ -39,7 +39,7 @@ UNITPROGS = unit1300 unit1302 unit1303 unit1304 unit1305 unit1307 \
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unit1608 unit1609 unit1610 unit1611 unit1612 unit1614 unit1615 unit1616 \
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unit1620 unit1621 \
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unit1650 unit1651 unit1652 unit1653 unit1654 unit1655 unit1656 \
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unit1660 unit1661 unit1663 \
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unit1660 unit1661 unit1663 unit1664 \
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unit2600 unit2601 unit2602 unit2603 unit2604 \
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unit3200 \
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unit3205
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@ -132,6 +132,8 @@ unit1661_SOURCES = unit1661.c $(UNITFILES)
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unit1663_SOURCES = unit1663.c $(UNITFILES)
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unit1664_SOURCES = unit1664.c $(UNITFILES)
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unit2600_SOURCES = unit2600.c $(UNITFILES)
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unit2601_SOURCES = unit2601.c $(UNITFILES)
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@ -156,7 +156,7 @@ UNITTEST_START
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}
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chost = headers[i].chost ? headers[i].chost : headers[i].host;
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e = Curl_hsts(h, chost, TRUE);
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e = Curl_hsts(h, chost, strlen(chost), TRUE);
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showsts(e, chost);
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}
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@ -165,7 +165,7 @@ UNITTEST_START
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/* verify that it is exists for 7 seconds */
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chost = "expire.example";
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for(i = 100; i < 110; i++) {
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e = Curl_hsts(h, chost, TRUE);
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e = Curl_hsts(h, chost, strlen(chost), TRUE);
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showsts(e, chost);
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deltatime++; /* another second passed */
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}
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254
tests/unit/unit1664.c
Normal file
254
tests/unit/unit1664.c
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@ -0,0 +1,254 @@
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#include "curlcheck.h"
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#ifdef HAVE_NETINET_IN6_H
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#include <netinet/in6.h>
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#endif
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#include <curl/curl.h>
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#include "strparse.h"
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#include "memdebug.h" /* LAST include file */
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static CURLcode unit_setup(void)
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{
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CURLcode res = CURLE_OK;
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global_init(CURL_GLOBAL_ALL);
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return res;
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}
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static void unit_stop(void)
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{
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curl_global_cleanup();
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}
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UNITTEST_START
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{
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static const char *wordparse[] = {
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"word",
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"word ",
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" word ",
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"wo rd",
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"word(",
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"wor(d",
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"perfect",
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"",
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"longerth",
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NULL
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};
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int i;
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printf("Curl_str_word\n");
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for(i = 0; wordparse[i]; i++) {
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struct Curl_str out;
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char *line = (char *)wordparse[i];
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char *orgline = line;
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int rc = Curl_str_word(&line, &out, 7);
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printf("%u: (\"%s\") %d, \"%.*s\" [%d], line %d\n",
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i, orgline, rc, (int)out.len, out.str, (int)out.len,
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(int)(line - orgline));
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}
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printf("Curl_str_until\n");
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for(i = 0; wordparse[i]; i++) {
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struct Curl_str out;
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char *line = (char *)wordparse[i];
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char *orgline = line;
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int rc = Curl_str_until(&line, &out, 7, 'd');
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printf("%u: (\"%s\") %d, \"%.*s\" [%d], line %d\n",
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i, orgline, rc, (int)out.len, out.str, (int)out.len,
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(int)(line - orgline));
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}
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{
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static const char *qwords[] = {
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"\"word\"",
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"\"word",
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"word\"",
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"\"word\"\"",
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"\"word\" ",
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" \"word\"",
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"\"perfect\"",
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"\"p r e t\"",
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"\"perfec\\\"",
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"\"\"",
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"",
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"\"longerth\"",
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NULL
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};
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printf("Curl_str_quotedword\n");
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for(i = 0; qwords[i]; i++) {
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struct Curl_str out;
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char *line = (char *)qwords[i];
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char *orgline = line;
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int rc = Curl_str_quotedword(&line, &out, 7);
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printf("%u: (\"%s\") %d, \"%.*s\" [%d], line %d\n",
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i, orgline, rc, (int)out.len, out.str, (int)out.len,
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(int)(line - orgline));
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}
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}
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{
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static const char *single[] = {
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"a",
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"aa",
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"A",
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"b",
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"\\",
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" ",
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"",
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NULL
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};
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printf("Curl_str_single\n");
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for(i = 0; single[i]; i++) {
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char *line = (char *)single[i];
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char *orgline = line;
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int rc = Curl_str_single(&line, 'a');
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printf("%u: (\"%s\") %d, line %d\n",
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i, orgline, rc, (int)(line - orgline));
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}
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}
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{
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static const char *single[] = {
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"a",
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"aa",
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"A",
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"b",
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"\\",
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" ",
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"\t",
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"\n",
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"",
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NULL
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};
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printf("Curl_str_singlespace\n");
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for(i = 0; single[i]; i++) {
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char *line = (char *)single[i];
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char *orgline = line;
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int rc = Curl_str_singlespace(&line);
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printf("%u: (\"%s\") %d, line %d\n",
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i, orgline, rc, (int)(line - orgline));
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}
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}
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{
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static const char *single[] = {
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"a",
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"aa",
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"A",
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"b",
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"\\",
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" ",
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"",
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NULL
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};
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printf("Curl_str_single\n");
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for(i = 0; single[i]; i++) {
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char *line = (char *)single[i];
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char *orgline = line;
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int rc = Curl_str_single(&line, 'a');
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printf("%u: (\"%s\") %d, line %d\n",
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i, orgline, rc, (int)(line - orgline));
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}
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}
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{
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static const char *nums[] = {
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"1",
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"10000",
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"1234",
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"1235",
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"1236",
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"01234",
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"00000000000000000000000000001234",
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"0123 345",
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"0123O345",
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"-12",
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" 123",
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"",
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NULL
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};
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printf("Curl_str_number\n");
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for(i = 0; nums[i]; i++) {
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size_t num;
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char *line = (char *)nums[i];
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char *orgline = line;
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int rc = Curl_str_number(&line, &num, 1235);
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printf("%u: (\"%s\") %d, [%u] line %d\n",
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i, orgline, rc, (int)num, (int)(line - orgline));
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}
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}
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{
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/* SIZE_T_MAX is typically 18446744073709551615 */
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static const char *nums[] = {
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"9223372036854775808", /* 2^63 */
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"9223372036854775809", /* 2^63 + 1 */
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"18446744073709551615", /* 2^64 - 1 */
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"18446744073709551616", /* 2^64 */
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"18446744073709551617", /* 2^64 + 1 */
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NULL
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};
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printf("Curl_str_number / max\n");
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for(i = 0; nums[i]; i++) {
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size_t num;
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char *line = (char *)nums[i];
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char *orgline = line;
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int rc = Curl_str_number(&line, &num, SIZE_T_MAX);
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printf("%u: (\"%s\") %d, [%zu] line %d\n",
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i, orgline, rc, num, (int)(line - orgline));
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}
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}
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{
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static const char *newl[] = {
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"a",
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"aa",
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"A",
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"b",
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"\\",
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" ",
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"\n",
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"\r",
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"\r\n",
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"",
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NULL
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};
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printf("Curl_str_newline\n");
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for(i = 0; newl[i]; i++) {
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char *line = (char *)newl[i];
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char *orgline = line;
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int rc = Curl_str_newline(&line);
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printf("%u: (\"%s\") %d, line %d\n",
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i, orgline, rc, (int)(line - orgline));
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}
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}
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}
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UNITTEST_STOP
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