Update TOML C99 library

From https://github.com/cktan/tomlc99, merge commits after
894902820a3ea2f1ec470cd7fe338bde54045cf5 (2022-09-12) up to and including
df627177cd1e80176c7a5245f26fd3b8e6187368 (2025-05-01)

third_party/tomlc99/README.md

@@ -1,12 +1,14 @@
 # tomlc99
 
+> **Note: there is a newer version of this library available at [tomlc17](https://github.com/cktan/tomlc17).**
+
 TOML in c99; v1.0 compliant.
 
 If you are looking for a C++ library, you might try this wrapper: [https://github.com/cktan/tomlcpp](https://github.com/cktan/tomlcpp).
 
 * Compatible with [TOML v1.0.0](https://toml.io/en/v1.0.0).
 * Tested with multiple test suites, including
-[BurntSushi/toml-test](https://github.com/BurntSushi/toml-test) and
+[toml-lang/toml-test](https://github.com/toml-lang/toml-test) and
 [iarna/toml-spec-tests](https://github.com/iarna/toml-spec-tests).
 * Provides very simple and intuitive interface.
 
@@ -174,7 +176,7 @@ Alternatively, specify `make install prefix=/a/file/path` to install into
 
 ## Testing
 
-To test against the standard test set provided by BurntSushi/toml-test:
+To test against the standard test set provided by toml-lang/toml-test:
 
 ```sh
 % make

third_party/tomlc99/test1/build.sh

@@ -1,9 +1,6 @@
+#!/usr/bin/env bash
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
-mkdir -p $DIR/goworkspace
-export GOPATH=$DIR/goworkspace
-go get github.com/BurntSushi/toml-test@latest # install test suite
-go install github.com/BurntSushi/toml/cmd/toml-test-decoder@latest # e.g., install my parser
-cp $GOPATH/bin/* .
-
+export GOBIN=$DIR
+go install github.com/toml-lang/toml-test/cmd/toml-test@latest # install test suite

third_party/tomlc99/test1/run.sh

@@ -1,5 +1,5 @@
+#!/usr/bin/env bash
+
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
-rm -f tests
-ln -s ./goworkspace/pkg/mod/github.com/\!burnt\!sushi/toml-test@v0.1.0/tests
-./toml-test  ../toml_json
+$DIR/toml-test $DIR/../toml_json

third_party/tomlc99/test2/build.sh

@@ -1,6 +1,7 @@
+#!/usr/bin/env bash
+
 set -e
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
 [ -d toml-spec-tests ] || git clone https://github.com/cktan/toml-spec-tests.git
-

third_party/tomlc99/test2/run.sh

@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 if ! (which jq >& /dev/null); then
     echo "ERROR: please install the 'jq' utility"
     exit 1

third_party/tomlc99/toml.c

@@ -221,8 +221,8 @@ int toml_ucs_to_utf8(int64_t code, char buf[6]) {
      110xxxxx 10xxxxxx
   */
   if (code <= 0x000007FF) {
-    buf[0] = (unsigned char) (0xc0 | (code >> 6));
-    buf[1] = (unsigned char) (0x80 | (code & 0x3f));
+    buf[0] = (unsigned char)(0xc0 | (code >> 6));
+    buf[1] = (unsigned char)(0x80 | (code & 0x3f));
     return 2;
   }
 
@@ -230,9 +230,9 @@ int toml_ucs_to_utf8(int64_t code, char buf[6]) {
      1110xxxx 10xxxxxx 10xxxxxx
   */
   if (code <= 0x0000FFFF) {
-    buf[0] = (unsigned char) (0xe0 | (code >> 12));
-    buf[1] = (unsigned char) (0x80 | ((code >> 6) & 0x3f));
-    buf[2] = (unsigned char) (0x80 | (code & 0x3f));
+    buf[0] = (unsigned char)(0xe0 | (code >> 12));
+    buf[1] = (unsigned char)(0x80 | ((code >> 6) & 0x3f));
+    buf[2] = (unsigned char)(0x80 | (code & 0x3f));
     return 3;
   }
 
@@ -240,10 +240,10 @@ int toml_ucs_to_utf8(int64_t code, char buf[6]) {
      11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
   */
   if (code <= 0x001FFFFF) {
-    buf[0] = (unsigned char) (0xf0 | (code >> 18));
-    buf[1] = (unsigned char) (0x80 | ((code >> 12) & 0x3f));
-    buf[2] = (unsigned char) (0x80 | ((code >> 6) & 0x3f));
-    buf[3] = (unsigned char) (0x80 | (code & 0x3f));
+    buf[0] = (unsigned char)(0xf0 | (code >> 18));
+    buf[1] = (unsigned char)(0x80 | ((code >> 12) & 0x3f));
+    buf[2] = (unsigned char)(0x80 | ((code >> 6) & 0x3f));
+    buf[3] = (unsigned char)(0x80 | (code & 0x3f));
     return 4;
   }
 
@@ -251,11 +251,11 @@ int toml_ucs_to_utf8(int64_t code, char buf[6]) {
      111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
   */
   if (code <= 0x03FFFFFF) {
-    buf[0] = (unsigned char) (0xf8 | (code >> 24));
-    buf[1] = (unsigned char) (0x80 | ((code >> 18) & 0x3f));
-    buf[2] = (unsigned char) (0x80 | ((code >> 12) & 0x3f));
-    buf[3] = (unsigned char) (0x80 | ((code >> 6) & 0x3f));
-    buf[4] = (unsigned char) (0x80 | (code & 0x3f));
+    buf[0] = (unsigned char)(0xf8 | (code >> 24));
+    buf[1] = (unsigned char)(0x80 | ((code >> 18) & 0x3f));
+    buf[2] = (unsigned char)(0x80 | ((code >> 12) & 0x3f));
+    buf[3] = (unsigned char)(0x80 | ((code >> 6) & 0x3f));
+    buf[4] = (unsigned char)(0x80 | (code & 0x3f));
     return 5;
   }
 
@@ -263,12 +263,12 @@ int toml_ucs_to_utf8(int64_t code, char buf[6]) {
      1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
   */
   if (code <= 0x7FFFFFFF) {
-    buf[0] = (unsigned char) (0xfc | (code >> 30));
-    buf[1] = (unsigned char) (0x80 | ((code >> 24) & 0x3f));
-    buf[2] = (unsigned char) (0x80 | ((code >> 18) & 0x3f));
-    buf[3] = (unsigned char) (0x80 | ((code >> 12) & 0x3f));
-    buf[4] = (unsigned char) (0x80 | ((code >> 6) & 0x3f));
-    buf[5] = (unsigned char) (0x80 | (code & 0x3f));
+    buf[0] = (unsigned char)(0xfc | (code >> 30));
+    buf[1] = (unsigned char)(0x80 | ((code >> 24) & 0x3f));
+    buf[2] = (unsigned char)(0x80 | ((code >> 18) & 0x3f));
+    buf[3] = (unsigned char)(0x80 | ((code >> 12) & 0x3f));
+    buf[4] = (unsigned char)(0x80 | ((code >> 6) & 0x3f));
+    buf[5] = (unsigned char)(0x80 | (code & 0x3f));
     return 6;
   }
 
@@ -412,8 +412,10 @@ static void *expand(void *p, int sz, int newsz) {
   if (!s)
     return 0;
 
-  memcpy(s, p, sz);
-  FREE(p);
+  if (p) {
+    memcpy(s, p, sz);
+    FREE(p);
+  }
   return s;
 }
 
@@ -423,8 +425,10 @@ static void **expand_ptrarr(void **p, int n) {
     return 0;
 
   s[n] = 0;
-  memcpy(s, p, n * sizeof(void *));
-  FREE(p);
+  if (p) {
+    memcpy(s, p, n * sizeof(void *));
+    FREE(p);
+  }
   return s;
 }
 
@@ -2212,6 +2216,7 @@ int toml_rtos(toml_raw_t src, char **ret) {
   if (!src)
     return -1;
 
+  // for strings, first char must be a s-quote or d-quote
   int qchar = src[0];
   int srclen = strlen(src);
   if (!(qchar == '\'' || qchar == '"')) {
@@ -2220,12 +2225,14 @@ int toml_rtos(toml_raw_t src, char **ret) {
 
   // triple quotes?
   if (qchar == src[1] && qchar == src[2]) {
-    multiline = 1;
-    sp = src + 3;
-    sq = src + srclen - 3;
-    /* last 3 chars in src must be qchar */
-    if (!(sp <= sq && sq[0] == qchar && sq[1] == qchar && sq[2] == qchar))
+    multiline = 1;         // triple-quote implies multiline
+    sp = src + 3;          // first char after quote
+    sq = src + srclen - 3; // first char of ending quote
+
+    if (!(sp <= sq && sq[0] == qchar && sq[1] == qchar && sq[2] == qchar)) {
+      // last 3 chars in src must be qchar
       return -1;
+    }
 
     /* skip new line immediate after qchar */
     if (sp[0] == '\n')
@@ -2234,13 +2241,18 @@ int toml_rtos(toml_raw_t src, char **ret) {
       sp += 2;
 
   } else {
-    sp = src + 1;
-    sq = src + srclen - 1;
-    /* last char in src must be qchar */
-    if (!(sp <= sq && *sq == qchar))
+    sp = src + 1;          // first char after quote
+    sq = src + srclen - 1; // ending quote
+    if (!(sp <= sq && *sq == qchar)) {
+      /* last char in src must be qchar */
       return -1;
+    }
   }
 
+  // at this point:
+  //     sp points to first valid char after quote.
+  //     sq points to one char beyond last valid char.
+  //     string len is (sq - sp).
   if (qchar == '\'') {
     *ret = norm_lit_str(sp, sq - sp, multiline, 0, 0);
   } else {

third_party/tomlc99/toml.h

@@ -26,7 +26,7 @@
 #define TOML_H
 
 #ifdef _MSC_VER
-#pragma warning(disable: 4996)
+#pragma warning(disable : 4996)
 #endif
 
 #include <stdint.h>

third_party/tomlc99/toml_json.c

@@ -91,15 +91,16 @@ static void print_raw(const char *s) {
     else
       millisec[0] = 0;
     if (ts.year && ts.hour) {
-      printf("{\"type\":\"datetime\",\"value\":\"%04d-%02d-%02dT%02d:%02d:%02d%"
+      printf("{\"type\":\"%s\",\"value\":\"%04d-%02d-%02dT%02d:%02d:%02d%"
              "s%s\"}",
+             (ts.z ? "datetime" : "datetime-local"),
              *ts.year, *ts.month, *ts.day, *ts.hour, *ts.minute, *ts.second,
              millisec, (ts.z ? ts.z : ""));
     } else if (ts.year) {
-      printf("{\"type\":\"date\",\"value\":\"%04d-%02d-%02d\"}", *ts.year,
+      printf("{\"type\":\"date-local\",\"value\":\"%04d-%02d-%02d\"}", *ts.year,
              *ts.month, *ts.day);
     } else if (ts.hour) {
-      printf("{\"type\":\"time\",\"value\":\"%02d:%02d:%02d%s\"}", *ts.hour,
+      printf("{\"type\":\"time-local\",\"value\":\"%02d:%02d:%02d%s\"}", *ts.hour,
              *ts.minute, *ts.second, millisec);
     }
   } else {
@@ -149,36 +150,43 @@ static void print_table_array(toml_array_t *curarr) {
 }
 
 static void print_array(toml_array_t *curarr) {
-  toml_array_t *arr;
-  const char *raw;
-  int i;
-
   if (toml_array_kind(curarr) == 't') {
     print_table_array(curarr);
     return;
   }
 
-  printf("{\"type\":\"array\",\"value\":[");
-  switch (toml_array_kind(curarr)) {
+  printf("[");
 
-  case 'v':
-    for (i = 0; 0 != (raw = toml_raw_at(curarr, i)); i++) {
-      printf("%s", i > 0 ? "," : "");
-      print_raw(raw);
-    }
-    break;
+  const char *raw;
+  toml_array_t *arr;
+  toml_table_t *tab;
 
-  case 'a':
-    for (i = 0; 0 != (arr = toml_array_at(curarr, i)); i++) {
-      printf("%s", i > 0 ? "," : "");
+  const int n = toml_array_nelem(curarr);
+  for (int i = 0; i < n; i++) {
+    printf("%s", i > 0 ? "," : "");
+
+    if (0 != (arr = toml_array_at(curarr, i))) {
       print_array(arr);
+      continue;
     }
-    break;
 
-  default:
-    break;
+    if (0 != (tab = toml_table_at(curarr, i))) {
+      print_table(tab);
+      continue;
+    }
+
+    raw = toml_raw_at(curarr, i);
+    if (raw) {
+      print_raw(raw);
+      continue;
+    }
+
+    fflush(stdout);
+    fprintf(stderr, "ERROR: unable to decode value in array\n");
+    exit(1);
   }
-  printf("]}");
+
+  printf("]");
 }
 
 static void cat(FILE *fp) {