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toml-c.h
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#ifndef TOML_H
#define TOML_H
/// file toml-c.h from https://github.com/arp242/toml-c by Martin Tournoij
#ifndef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 200809L
#endif
#ifdef _MSC_VER
#pragma warning(disable : 4996)
#endif
#ifdef __cplusplus
#define TOML_EXTERN extern "C"
#else
#define TOML_EXTERN extern
#endif
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
typedef struct toml_table_t toml_table_t;
typedef struct toml_array_t toml_array_t;
typedef struct toml_value_t toml_value_t;
typedef struct toml_timestamp_t toml_timestamp_t;
typedef struct toml_keyval_t toml_keyval_t;
typedef struct toml_arritem_t toml_arritem_t;
// TOML table.
struct toml_table_t {
const char *key; // Key for this table
int keylen; // length of key.
bool implicit; // Table was created implicitly
bool readonly; // No more modification allowed
int nkval; // key-values in the table
toml_keyval_t **kval;
int narr; // arrays in the table
toml_array_t **arr;
int ntab; // tables in the table
toml_table_t **tab;
};
// TOML array.
struct toml_array_t {
const char *key; // key to this array
int keylen; // length of key.
int kind; // element kind: 'v'alue, 'a'rray, or 't'able, 'm'ixed
int type; // for value kind: 'i'nt, 'd'ouble, 'b'ool, 's'tring, 't'ime, 'D'ate, 'T'imestamp, 'm'ixed
int nitem; // number of elements
toml_arritem_t *item;
};
struct toml_arritem_t {
int valtype; // for value kind: 'i'nt, 'd'ouble, 'b'ool, 's'tring, 't'ime, 'D'ate, 'T'imestamp
char *val;
toml_array_t *arr;
toml_table_t *tab;
};
// TOML key/value pair.
struct toml_keyval_t {
const char *key; // key to this value
int keylen; // length of key.
const char *val; // the raw value
};
// Parsed TOML value.
//
// The string value s is a regular NULL-terminated C string, but the string
// length is also given in sl since TOML values may contain NULL bytes. The
// value is guaranteed to be correct UTF-8.
struct toml_value_t {
bool ok; // Was this value present?
union {
toml_timestamp_t *ts; // datetime; must be freed after use.
char *s; // string value; must be freed after use
int sl; // string length, excluding NULL.
bool b; // bool value
int64_t i; // int value
double d; // double value
} u;
};
// Timestamp type; some values may be empty depending on the value of kind.
struct toml_timestamp_t {
// 'd'atetime
// 'l'local-datetime
// 'D'ate-local
// 't'ime-local
char kind;
int year, month, day;
int hour, minute, second, millisec;
char *z;
};
// toml_parse() parses a TOML document from a string. Returns 0 on error, with
// the error message stored in errbuf.
//
// toml_parse_file() is identical, but reads from a file descriptor.
//
// Use toml_free() to free the return value; this will invalidate all handles
// for this table.
TOML_EXTERN toml_table_t *toml_parse (char *toml, char *errbuf, int errbufsz);
TOML_EXTERN toml_table_t *toml_parse_file (FILE *fp, char *errbuf, int errbufsz);
TOML_EXTERN void toml_free (toml_table_t *table);
// Table functions.
//
// toml_table_len() gets the number of direct keys for this table;
// toml_table_key() gets the nth direct key in this table.
TOML_EXTERN int toml_table_len (const toml_table_t *table);
TOML_EXTERN const char *toml_table_key (const toml_table_t *table, int keyidx, int *keylen);
TOML_EXTERN toml_value_t toml_table_string (const toml_table_t *table, const char *key);
TOML_EXTERN toml_value_t toml_table_bool (const toml_table_t *table, const char *key);
TOML_EXTERN toml_value_t toml_table_int (const toml_table_t *table, const char *key);
TOML_EXTERN toml_value_t toml_table_double (const toml_table_t *table, const char *key);
TOML_EXTERN toml_value_t toml_table_timestamp (const toml_table_t *table, const char *key);
TOML_EXTERN toml_array_t *toml_table_array (const toml_table_t *table, const char *key);
TOML_EXTERN toml_table_t *toml_table_table (const toml_table_t *table, const char *key);
// Array functions.
TOML_EXTERN int toml_array_len (const toml_array_t *array);
TOML_EXTERN toml_value_t toml_array_string (const toml_array_t *array, int idx);
TOML_EXTERN toml_value_t toml_array_bool (const toml_array_t *array, int idx);
TOML_EXTERN toml_value_t toml_array_int (const toml_array_t *array, int idx);
TOML_EXTERN toml_value_t toml_array_double (const toml_array_t *array, int idx);
TOML_EXTERN toml_value_t toml_array_timestamp (const toml_array_t *array, int idx);
TOML_EXTERN toml_array_t *toml_array_array (const toml_array_t *array, int idx);
TOML_EXTERN toml_table_t *toml_array_table (const toml_array_t *array, int idx);
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <math.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define ALIGN8(sz) (((sz) + 7) & ~7)
#define calloc(x, y) error - forbidden - use CALLOC instead
static void *CALLOC(size_t nmemb, size_t sz) {
int nb = ALIGN8(sz) * nmemb;
void *p = malloc(nb);
if (p) {
memset(p, 0, nb);
}
return p;
}
// some old platforms define strdup macro -- drop it.
#undef strdup
#define strdup(x) error - forbidden - use STRDUP instead
static char *STRDUP(const char *s) {
int len = strlen(s);
char *p = malloc(len + 1);
if (p) {
memcpy(p, s, len);
p[len] = 0;
}
return p;
}
// some old platforms define strndup macro -- drop it.
#undef strndup
#define strndup(x) error - forbiden - use STRNDUP instead
static char *STRNDUP(const char *s, size_t n) {
size_t len = strnlen(s, n);
char *p = malloc(len + 1);
if (p) {
memcpy(p, s, len);
p[len] = 0;
}
return p;
}
// Unparsed values.
typedef const char *toml_unparsed_t;
toml_unparsed_t toml_table_unparsed (const toml_table_t *table, const char *key);
toml_unparsed_t toml_array_unparsed (const toml_array_t *array, int idx);
int toml_value_string (toml_unparsed_t s, char **ret, int *len);
int toml_value_bool (toml_unparsed_t s, bool *ret);
int toml_value_int (toml_unparsed_t s, int64_t *ret);
int toml_value_double (toml_unparsed_t s, double *ret);
int toml_value_timestamp (toml_unparsed_t s, toml_timestamp_t *ret);
// Convert escape to UTF-8; return #bytes used in buf to encode the char, or -1
// on error.
// http://stackoverflow.com/questions/6240055/manually-converting-unicode-codepoints-into-utf-8-and-utf-16
int read_unicode_escape(int64_t code, char buf[6]) {
if (0xd800 <= code && code <= 0xdfff) /// UTF-16 surrogates
return -1;
if (0x10FFFF < code)
return -1;
if (code < 0)
return -1;
if (code <= 0x7F) { /// 0x00000000 - 0x0000007F: 0xxxxxxx
buf[0] = (unsigned char)code;
return 1;
}
if (code <= 0x000007FF) { /// 0x00000080 - 0x000007FF: 110xxxxx 10xxxxxx
buf[0] = (unsigned char)(0xc0 | (code >> 6));
buf[1] = (unsigned char)(0x80 | (code & 0x3f));
return 2;
}
if (code <= 0x0000FFFF) { /// 0x00000800 - 0x0000FFFF: 1110xxxx 10xxxxxx 10xxxxxx
buf[0] = (unsigned char)(0xe0 | (code >> 12));
buf[1] = (unsigned char)(0x80 | ((code >> 6) & 0x3f));
buf[2] = (unsigned char)(0x80 | (code & 0x3f));
return 3;
}
if (code <= 0x001FFFFF) { /// 0x00010000 - 0x001FFFFF: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
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;
}
if (code <= 0x03FFFFFF) { /// 0x00200000 - 0x03FFFFFF: 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
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;
}
if (code <= 0x7FFFFFFF) { /// 0x04000000 - 0x7FFFFFFF: 1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
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;
}
return -1;
}
static inline void xfree(const void *x) {
if (x)
free((void *)(intptr_t)x);
}
enum tokentype_t {
INVALID,
DOT,
COMMA,
EQUAL,
LBRACE,
RBRACE,
NEWLINE,
LBRACKET,
RBRACKET,
STRING,
};
typedef enum tokentype_t tokentype_t;
typedef struct token_t token_t;
struct token_t {
tokentype_t tok;
int lineno;
char *ptr; // points into context->start
int len;
int eof;
};
typedef struct context_t context_t;
struct context_t {
char *start;
char *stop;
char *errbuf;
int errbufsz;
token_t tok;
toml_table_t *root;
toml_table_t *curtab;
struct {
int top;
char *key[10];
int keylen[10];
token_t tok[10];
} tpath;
};
#define STRINGIFY(x) #x
#define TOSTRING(x) STRINGIFY(x)
#define FLINE __FILE__ ":" TOSTRING(__LINE__)
static int next_token(context_t *ctx, bool dotisspecial);
// Error reporting. Call when an error is detected. Always return -1.
static int e_outofmemory(context_t *ctx, const char *fline) {
snprintf(ctx->errbuf, ctx->errbufsz, "ERROR: out of memory (%s)", fline);
return -1;
}
static int e_internal(context_t *ctx, const char *fline) {
snprintf(ctx->errbuf, ctx->errbufsz, "internal error (%s)", fline);
return -1;
}
static int e_syntax(context_t *ctx, int lineno, const char *msg) {
snprintf(ctx->errbuf, ctx->errbufsz, "line %d: %s", lineno, msg);
return -1;
}
static int e_badkey(context_t *ctx, int lineno) {
snprintf(ctx->errbuf, ctx->errbufsz, "line %d: bad key", lineno);
return -1;
}
static int e_keyexists(context_t *ctx, int lineno) {
snprintf(ctx->errbuf, ctx->errbufsz, "line %d: key exists", lineno);
return -1;
}
static int e_forbid(context_t *ctx, int lineno, const char *msg) {
snprintf(ctx->errbuf, ctx->errbufsz, "line %d: %s", lineno, msg);
return -1;
}
static void *expand(void *p, int sz, int newsz) {
void *s = malloc(newsz);
if (!s)
return 0;
if (p) {
memcpy(s, p, sz);
free(p);
}
return s;
}
static void **expand_ptrarr(void **p, int n) {
void **s = malloc((n + 1) * sizeof(void *));
if (!s)
return 0;
s[n] = 0;
if (p) {
memcpy(s, p, n * sizeof(void *));
free(p);
}
return s;
}
static toml_arritem_t *expand_arritem(toml_arritem_t *p, int n) {
toml_arritem_t *pp = expand(p, n * sizeof(*p), (n + 1) * sizeof(*p));
if (!pp)
return 0;
memset(&pp[n], 0, sizeof(pp[n]));
return pp;
}
static uint8_t const u8_length[] = {1,1,1,1,1,1,1,1,0,0,0,0,2,2,3,4};
#define u8length(s) u8_length[(((uint8_t *)(s))[0] & 0xFF) >> 4];
static char *norm_lit_str(const char *src, int srclen, int *len, bool multiline, bool is_key, char *errbuf, int errbufsz) {
const char *sp = src;
const char *sq = src + srclen;
char *dst = 0; /// will write to dst[] and return it
int max = 0; /// max size of dst[]
int off = 0; /// cur offset in dst[]
for (;;) { /// scan forward on src
if (off >= max - 10) { /// have some slack for misc stuff
int newmax = max + 50;
char *x = expand(dst, max, newmax);
if (!x) {
xfree(dst);
snprintf(errbuf, errbufsz, "out of memory");
return 0;
}
dst = x;
max = newmax;
}
if (sp >= sq) /// finished?
break;
uint8_t l = u8length(sp);
if (l == 0) {
xfree(dst);
snprintf(errbuf, errbufsz, "invalid UTF-8 at byte pos %d", off);
return 0;
}
if (l > 1) {
for (int i = 0; i < l; i++) {
char ch = *sp++;
if ((ch & 0x80) != 0x80) {
xfree(dst);
snprintf(errbuf, errbufsz, "invalid UTF-8 at byte pos %d", off);
return 0;
}
dst[off++] = ch;
}
continue;
}
char ch = *sp++;
if (is_key && ch == '\n') {
xfree(dst);
snprintf(errbuf, errbufsz, "literal newlines not allowed in key");
return 0;
}
/// control characters other than tab is not allowed
if ((0 <= ch && ch <= 0x08) || (0x0a <= ch && ch <= 0x1f) || ch == 0x7f) {
if (!(multiline && (ch == '\r' || ch == '\n'))) {
xfree(dst);
snprintf(errbuf, errbufsz, "invalid char U+%04x", ch);
return 0;
}
}
dst[off++] = ch; /// a plain copy suffice
}
*len = off;
dst[off++] = 0;
return dst;
}
/* Convert src to raw unescaped utf-8 string.
* Returns NULL if error with errmsg in errbuf. */
static char *norm_basic_str(const char *src, int srclen, int *len, bool multiline, bool is_key, char *errbuf, int errbufsz) {
const char *sp = src;
const char *sq = src + srclen;
char *dst = 0; /// will write to dst[] and return it
int max = 0; /// max size of dst[]
int off = 0; /// cur offset in dst[]
///
/// scan forward on src
for (;;) {
if (off >= max - 10) { /// have some slack for misc stuff
int newmax = max + 50;
char *x = expand(dst, max, newmax);
if (!x) {
xfree(dst);
snprintf(errbuf, errbufsz, "out of memory");
return 0;
}
dst = x;
max = newmax;
}
if (sp >= sq) /// finished?
break;
uint8_t l = u8length(sp);
if (l == 0) {
xfree(dst);
snprintf(errbuf, errbufsz, "invalid UTF-8 at byte pos %d", off);
return 0;
}
if (l > 1) {
for (int i = 0; i < l; i++) {
char ch = *sp++;
if ((ch & 0x80) != 0x80) {
xfree(dst);
snprintf(errbuf, errbufsz, "invalid UTF-8 at byte pos %d", off);
return 0;
}
dst[off++] = ch;
}
continue;
}
char ch = *sp++;
if (is_key && ch == '\n') {
xfree(dst);
snprintf(errbuf, errbufsz, "literal newlines not allowed in key");
return 0;
}
if (ch != '\\') {
/// must be escaped: U+0000 to U+0008, U+000A to U+001F, U+007F
if ((ch >= 0 && ch <= 0x08) || (ch >= 0x0a && ch <= 0x1f) || ch == 0x7f) {
if (!(multiline && (ch == '\r' || ch == '\n'))) {
xfree(dst);
snprintf(errbuf, errbufsz, "invalid char U+%04x", ch);
return 0;
}
}
dst[off++] = ch; /// a plain copy suffice
continue;
}
if (sp >= sq) { /// ch was backslash. we expect the escape char.
snprintf(errbuf, errbufsz, "last backslash is invalid");
xfree(dst);
return 0;
}
if (multiline) { /// for multi-line, we want to kill line-ending-backslash.
if (sp[strspn(sp, " \t\r")] == '\n') { /// if there is only whitespace after the backslash ...
sp += strspn(sp, " \t\r\n"); /// skip all the following whitespaces
continue;
}
}
ch = *sp++; /// get the escaped char
switch (ch) {
case 'u':
case 'U': {
int64_t ucs = 0;
int nhex = (ch == 'u' ? 4 : 8);
for (int i = 0; i < nhex; i++) {
if (sp >= sq) {
snprintf(errbuf, errbufsz, "\\%c expects %d hex chars", ch, nhex);
xfree(dst);
return 0;
}
ch = *sp++;
int v = -1;
if ('0' <= ch && ch <= '9')
v = ch - '0';
else if ('A' <= ch && ch <= 'F')
v = ch - 'A' + 10;
else if ('a' <= ch && ch <= 'f')
v = (ch ^ 0x20) - 'A' + 10;
if (v == -1) {
snprintf(errbuf, errbufsz, "invalid hex chars for \\u or \\U");
xfree(dst);
return 0;
}
ucs = ucs * 16 + v;
}
int n = read_unicode_escape(ucs, &dst[off]);
if (n == -1) {
snprintf(errbuf, errbufsz, "illegal ucs code in \\u or \\U");
xfree(dst);
return 0;
}
off += n;
}; continue;
case 'b': ch = '\b'; break;
case 't': ch = '\t'; break;
case 'n': ch = '\n'; break;
case 'f': ch = '\f'; break;
case 'r': ch = '\r'; break;
case '"': ch = '"'; break;
case '\\': ch = '\\'; break;
default:
snprintf(errbuf, errbufsz, "illegal escape char \\%c", ch);
xfree(dst);
return 0;
}
dst[off++] = ch;
}
*len = off;
dst[off++] = 0; /// Cap with NUL and return it.
return dst;
}
// Normalize a key. Convert all special chars to raw unescaped utf-8 chars.
static char *normalize_key(context_t *ctx, token_t strtok, int *keylen) {
const char *sp = strtok.ptr;
const char *sq = strtok.ptr + strtok.len;
int lineno = strtok.lineno;
int ch = *sp;
char *ret;
// Quoted string
if (ch == '\'' || ch == '\"') {
/// if ''' or """, take 3 chars off front and back. Else, take 1 char off.
bool multiline = (sp[1] == ch && sp[2] == ch);
if (multiline)
sp += 3, sq -= 3;
else
sp++, sq--;
char ebuf[80];
if (ch == '\'')
ret = norm_lit_str(sp, sq - sp, keylen, multiline, true, ebuf, sizeof(ebuf));
else
ret = norm_basic_str(sp, sq - sp, keylen, multiline, true, ebuf, sizeof(ebuf));
if (!ret) {
e_syntax(ctx, lineno, ebuf);
return 0;
}
return ret;
}
*keylen = 0;
for (const char *c = sp; c != sq; c++) { /// Bare key: allow: [A-Za-z0-9_-]+
*keylen = *keylen + 1;
if (isalnum(*c) || *c == '_' || *c == '-')
continue;
e_badkey(ctx, lineno);
return 0;
}
if (!(ret = STRNDUP(sp, sq - sp))) { /// dup and return
e_outofmemory(ctx, FLINE);
return 0;
}
return ret;
}
/* Look up key in tab. Return 0 if not found, or
* 'v'alue, 'a'rray or 't'able depending on the element. */
static int check_key(toml_table_t *tab, const char *key, toml_keyval_t **ret_val, toml_array_t **ret_arr, toml_table_t **ret_tab) {
int i;
void *dummy;
if (!ret_tab)
ret_tab = (toml_table_t **)&dummy;
if (!ret_arr)
ret_arr = (toml_array_t **)&dummy;
if (!ret_val)
ret_val = (toml_keyval_t **)&dummy;
*ret_tab = 0;
*ret_arr = 0;
*ret_val = 0;
for (i = 0; i < tab->nkval; i++) {
if (strcmp(key, tab->kval[i]->key) == 0) {
*ret_val = tab->kval[i];
return 'v';
}
}
for (i = 0; i < tab->narr; i++) {
if (strcmp(key, tab->arr[i]->key) == 0) {
*ret_arr = tab->arr[i];
return 'a';
}
}
for (i = 0; i < tab->ntab; i++) {
if (strcmp(key, tab->tab[i]->key) == 0) {
*ret_tab = tab->tab[i];
return 't';
}
}
return 0;
}
static int key_kind(toml_table_t *tab, const char *key) {
return check_key(tab, key, 0, 0, 0);
}
/* Create a keyval in the table. */
static toml_keyval_t *create_keyval_in_table(context_t *ctx, toml_table_t *tab, token_t keytok) {
int keylen;
char *newkey = normalize_key(ctx, keytok, &keylen);
if (!newkey)
return 0;
toml_keyval_t *dest = 0;
if (key_kind(tab, newkey)) {
xfree(newkey);
e_keyexists(ctx, keytok.lineno);
return 0;
}
int n = tab->nkval;
toml_keyval_t **base;
if ((base = (toml_keyval_t **)expand_ptrarr((void **)tab->kval, n)) == 0) {
xfree(newkey);
e_outofmemory(ctx, FLINE);
return 0;
}
tab->kval = base;
if ((base[n] = (toml_keyval_t *)CALLOC(1, sizeof(*base[n]))) == 0) {
xfree(newkey);
e_outofmemory(ctx, FLINE);
return 0;
}
dest = tab->kval[tab->nkval++];
dest->key = newkey;
dest->keylen = keylen;
return dest;
}
// Create a table in the table.
static toml_table_t *create_keytable_in_table(context_t *ctx, toml_table_t *tab, token_t keytok) {
int keylen;
char *newkey = normalize_key(ctx, keytok, &keylen);
if (!newkey)
return 0;
toml_table_t *dest = 0;
if (check_key(tab, newkey, 0, 0, &dest)) {
xfree(newkey);
/// Special case: make explicit if table exists and was created
/// implicitly.
if (dest && dest->implicit) {
dest->implicit = false;
return dest;
}
e_keyexists(ctx, keytok.lineno);
return 0;
}
int n = tab->ntab;
toml_table_t **base;
if ((base = (toml_table_t **)expand_ptrarr((void **)tab->tab, n)) == 0) {
xfree(newkey);
e_outofmemory(ctx, FLINE);
return 0;
}
tab->tab = base;
if ((base[n] = (toml_table_t *)CALLOC(1, sizeof(*base[n]))) == 0) {
xfree(newkey);
e_outofmemory(ctx, FLINE);
return 0;
}
dest = tab->tab[tab->ntab++];
dest->key = newkey;
dest->keylen = keylen;
return dest;
}
// Create an array in the table.
static toml_array_t *create_keyarray_in_table(context_t *ctx, toml_table_t *tab, token_t keytok, char kind) {
int keylen;
char *newkey = normalize_key(ctx, keytok, &keylen);
if (!newkey)
return 0;
if (key_kind(tab, newkey)) {
xfree(newkey);
e_keyexists(ctx, keytok.lineno);
return 0;
}
int n = tab->narr;
toml_array_t **base;
if ((base = (toml_array_t **)expand_ptrarr((void **)tab->arr, n)) == 0) {
xfree(newkey);
e_outofmemory(ctx, FLINE);
return 0;
}
tab->arr = base;
if ((base[n] = (toml_array_t *)CALLOC(1, sizeof(*base[n]))) == 0) {
xfree(newkey);
e_outofmemory(ctx, FLINE);
return 0;
}
toml_array_t *dest = tab->arr[tab->narr++];
dest->keylen = keylen;
dest->key = newkey;
dest->kind = kind;
return dest;
}
static toml_arritem_t *create_value_in_array(context_t *ctx, toml_array_t *parent) {
const int n = parent->nitem;
toml_arritem_t *base = expand_arritem(parent->item, n);
if (!base) {
e_outofmemory(ctx, FLINE);
return 0;
}
parent->item = base;
parent->nitem++;
return &parent->item[n];
}
/* Create an array in an array */
static toml_array_t *create_array_in_array(context_t *ctx,
toml_array_t *parent) {
const int n = parent->nitem;
toml_arritem_t *base = expand_arritem(parent->item, n);
if (!base) {
e_outofmemory(ctx, FLINE);
return 0;
}
toml_array_t *ret = (toml_array_t *)CALLOC(1, sizeof(toml_array_t));
if (!ret) {
e_outofmemory(ctx, FLINE);
return 0;
}
base[n].arr = ret;
parent->item = base;
parent->nitem++;
return ret;
}
/* Create a table in an array */
static toml_table_t *create_table_in_array(context_t *ctx, toml_array_t *parent) {
int n = parent->nitem;
toml_arritem_t *base = expand_arritem(parent->item, n);
if (!base) {
e_outofmemory(ctx, FLINE);
return 0;
}
toml_table_t *ret = (toml_table_t *)CALLOC(1, sizeof(toml_table_t));
if (!ret) {
e_outofmemory(ctx, FLINE);
return 0;
}
base[n].tab = ret;
parent->item = base;
parent->nitem++;
return ret;
}
static int skip_newlines(context_t *ctx, bool isdotspecial) {
while (ctx->tok.tok == NEWLINE) {
if (next_token(ctx, isdotspecial))
return -1;
if (ctx->tok.eof)
break;
}
return 0;
}
static int parse_keyval(context_t *ctx, toml_table_t *tab);
static inline int eat_token(context_t *ctx, tokentype_t typ, bool isdotspecial, const char *fline) {
if (ctx->tok.tok != typ)
return e_internal(ctx, fline);
if (next_token(ctx, isdotspecial))
return -1;
return 0;
}
/* We are at '{ ... }'; parse the table. */
static int parse_inline_table(context_t *ctx, toml_table_t *tab) {
if (eat_token(ctx, LBRACE, 1, FLINE))
return -1;
for (;;) {
if (ctx->tok.tok == NEWLINE)
return e_syntax(ctx, ctx->tok.lineno, "newline not allowed in inline table");
if (ctx->tok.tok == RBRACE) // until closing brace
break;
if (ctx->tok.tok != STRING)
return e_syntax(ctx, ctx->tok.lineno, "expect a string");
if (parse_keyval(ctx, tab))
return -1;
if (ctx->tok.tok == NEWLINE)
return e_syntax(ctx, ctx->tok.lineno, "newline not allowed in inline table");
/* on comma, continue to scan for next keyval */
if (ctx->tok.tok == COMMA) {
if (eat_token(ctx, COMMA, 1, FLINE))
return -1;
continue;
}
break;
}
if (eat_token(ctx, RBRACE, 1, FLINE))
return -1;
tab->readonly = 1;
return 0;
}
static int valtype(const char *val) {
toml_timestamp_t ts;
if (*val == '\'' || *val == '"')
return 's';
if (toml_value_bool(val, false) == 0)
return 'b';
if (toml_value_int(val, 0) == 0)
return 'i';
if (toml_value_double(val, 0) == 0)
return 'd';
if (toml_value_timestamp(val, &ts) == 0) {
if (ts.year && ts.hour)
return 'T'; /// timestamp
if (ts.year)
return 'D'; /// date
return 't'; /// time
}
return 'u'; /// unknown
}
/* We are at '[...]' */
static int parse_array(context_t *ctx, toml_array_t *arr) {
if (eat_token(ctx, LBRACKET, 0, FLINE))
return -1;
for (;;) {
if (skip_newlines(ctx, 0))
return -1;
if (ctx->tok.tok == RBRACKET) /// until ]
break;
switch (ctx->tok.tok) {
case STRING: {
/// set array kind if this will be the first entry
if (arr->kind == 0)
arr->kind = 'v';
else if (arr->kind != 'v')
arr->kind = 'm';
char *val = ctx->tok.ptr;
int vlen = ctx->tok.len;
/// make a new value in array
toml_arritem_t *newval = create_value_in_array(ctx, arr);
if (!newval)
return e_outofmemory(ctx, FLINE);
if (!(newval->val = STRNDUP(val, vlen)))
return e_outofmemory(ctx, FLINE);
newval->valtype = valtype(newval->val);
/// set array type if this is the first entry
if (arr->nitem == 1)
arr->type = newval->valtype;
else if (arr->type != newval->valtype)
arr->type = 'm'; /// mixed
if (eat_token(ctx, ctx->tok.tok, 0, FLINE))
return -1;
break;
}
case LBRACKET: { /* [ [array], [array] ... ] */
/* set the array kind if this will be the first entry */
if (arr->kind == 0)
arr->kind = 'a';
else if (arr->kind != 'a')
arr->kind = 'm';
toml_array_t *subarr = create_array_in_array(ctx, arr);
if (!subarr)
return -1;
if (parse_array(ctx, subarr))
return -1;
break;
}
case LBRACE: { /* [ {table}, {table} ... ] */
/* set the array kind if this will be the first entry */
if (arr->kind == 0)
arr->kind = 't';
else if (arr->kind != 't')
arr->kind = 'm';
toml_table_t *subtab = create_table_in_array(ctx, arr);
if (!subtab)
return -1;
if (parse_inline_table(ctx, subtab))
return -1;
break;
}
default:
return e_syntax(ctx, ctx->tok.lineno, "syntax error");
}
if (skip_newlines(ctx, 0))
return -1;
/* on comma, continue to scan for next element */
if (ctx->tok.tok == COMMA) {
if (eat_token(ctx, COMMA, 0, FLINE))
return -1;
continue;
}
break;
}
if (eat_token(ctx, RBRACKET, 1, FLINE))
return -1;
return 0;
}
/* handle lines like these:
key = "value"
key = [ array ]
key = { table } */
static int parse_keyval(context_t *ctx, toml_table_t *tab) {
if (tab->readonly) {
return e_forbid(ctx, ctx->tok.lineno, "cannot insert new entry into existing table");
}
token_t key = ctx->tok;
if (eat_token(ctx, STRING, 1, FLINE))
return -1;
if (ctx->tok.tok == DOT) {
/* handle inline dotted key. e.g.
physical.color = "orange"
physical.shape = "round" */
toml_table_t *subtab = 0;
{
int keylen;
char *subtabstr = normalize_key(ctx, key, &keylen);
if (!subtabstr)