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ace5047782
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202 Commits

Author SHA1 Message Date
Max Bruckner
ace5047782 parse_string: reduce mental burden when reading the code 
This restructures parse_string in a way, that you need to keep less
state in your head to understand the code.

This is achieved by:
* only changing the input pointer (current position) at a few places
(not all throughout)
* splitting out the UTF16 handling into a separate function
* renaming the variables so you know what they do without additional
context
 2017-02-16 19:49:03 +01:00
Max Bruckner
03f23738bb parse_object: simplify to one do-while loop 2017-02-16 19:49:02 +01:00
Max Bruckner
24dbf29360 parse_array: simplify to one do-while loop 2017-02-16 19:49:02 +01:00
Max Bruckner
12b2daccf3 parse_{object,array}: set child only after parsing 
This only attaches the parsed linked lists to the items passed to
parse_object and parse_array.
 2017-02-16 01:03:43 +01:00
Max Bruckner
f8d0c47bdb Remove unnecessary assignment and silence clang analyzer 2017-02-16 00:31:57 +01:00
Max Bruckner
9f6fa94c91 ensure: replace pow2gt with multiplication by two 
This replaces the bit fiddling involved with calculating a new buffer
size by just multiplying the required length by two, paving the way to a
complete switch to size_t at a later point in time.
 2017-02-16 00:23:38 +01:00
Max Bruckner
123bb1af7b cJSON: prevent incompatible C and header versions 
Introduces a preprocessor directive that aborts the compilation if the
version numbers in the header don't match with the numbers in the c
file.
 2017-02-15 23:21:50 +01:00
Max Bruckner
cf862d0fed implement AddItemToObject using AddItemToObjectCS 2017-02-15 21:46:24 +01:00
Max Bruckner
3facca4792 parse functions: Only set type after successful 
This sets the type of an item only if parsing was successful.

This means that in case of failure, the item's type will remain to be
cJSON_Invalid.
 2017-02-15 21:25:48 +01:00
Max Bruckner
702fd95af3 fix #106: potentially invalid free in cJSON_AddItemToObject 2017-02-15 20:45:23 +01:00
Max Bruckner
94117a5d23 Fix #105, double free when parse_string fails 
This fixes a double free that happens when calling cJSON_Delete on an
item that has been used by parse_string and it failed parsing the
string.

The double free happens, because parse_string frees an alias of
item->valuestring, but doesn't set item->valuestring to NULL.
 2017-02-15 15:37:38 +01:00
Max Bruckner
4047de4f6e fix potential NULL dereferences found by coverity 2017-02-08 03:00:44 +01:00
Max Bruckner
87f77274de cJSON_SetNumberValue: Fix undefined double to int conversion 
This might cause slight changes in behavior, but it shouldn't break
anything that is not already broken (for example the original macro
could either return a double, or an integer or whatever depending on if
object is NULL or not.)
 2017-02-07 21:23:36 +01:00
Max Bruckner
dded751757 parse_string: remove useless first byte marks for utf8 2017-02-07 21:23:36 +01:00
Max Bruckner
d7b5545748 parse_hex4: deduplicate into a for loop 2017-02-07 21:23:36 +01:00
Max Bruckner
0747669972 parse_number: Switch to C library's strtod 
Replaces the hand written floating point parser with the C library
implementation.
 2017-02-07 21:23:36 +01:00
Max Bruckner
cc514583cc cJSON_Duplicate: goto fail error handling 
Simplify error handling using goto fail and improve some names.
 2017-02-07 20:59:55 +01:00
Max Bruckner
021b174ee1 parse_object: goto fail error handling 
Makes the control flow easier to reason about and fixes a few potential
memory leaks.
 2017-02-07 20:59:55 +01:00
Max Bruckner
99cd9af7d5 parse_array: goto fail error handling 
Makes the control flow easier to reason about and fixes a few potential
memory leaks.
 2017-02-07 20:59:55 +01:00
Max Bruckner
8656386c4f parse_string: goto fail error handling 
Makes the control flow easier to reason about and fixes a few potential
memory leaks.
 2017-02-07 20:59:55 +01:00
Max Bruckner
9ed906758e fix null pointer dereferences found by coverity 2017-02-07 19:07:18 +01:00
Max Bruckner
ee0c920dff fix: add break in UTF-16 handling 
Introducing the switch defaults in an earlier commit made UTF-16 \u
sequence handling broken.
 2017-02-04 01:54:56 +01:00
Max Bruckner
af6d5d3d7c Add more consts to unsigned chars 2017-02-03 22:41:14 +01:00
Max Bruckner
cf9d57d56c Fix incorrect return 2017-02-03 20:34:37 +01:00
Max Bruckner
3d3bfc6a4d Compiler flag -Wconversion 
Makes type conversions explicit, if they alter a value
 2017-02-03 18:36:13 +01:00
Max Bruckner
41e2837df1 Fix potentially undefined behavior when filling valueint 
If the number is bigger or smaller than the biggest or smallest integer,
the behavior would be undefined.

This commit defines it as saturation behavior.
 2017-02-03 18:36:13 +01:00
Max Bruckner
ecd5678527 Change all internal sizes to size_t 2017-02-03 18:36:12 +01:00
Max Bruckner
28b9ba4334 Change all internal strings to unsigned char* 2017-02-03 15:59:00 +01:00
Max Bruckner
b182ced1d6 Compiler flag -Wswitch-default + add defaults 2017-02-03 12:21:36 +01:00
Max Bruckner
fe18403935 Compiler flag -Wundef + fix incorrect macro 2017-02-03 12:14:50 +01:00
Max Bruckner
c49ffbfba8 cJSON_Version: returns a version string 
This is useful to programmatically find out the version of cJSON that
has been used (useful in case of scripting language bindings for
example).
 2017-01-12 20:37:29 +01:00
Max Bruckner
e3e0b5150b cJSON_CreateRaw: Format fixes 2017-01-05 21:33:52 +01:00
Max Bruckner
1df987a170 cJSON_strdup: Check for NULL string 2017-01-05 21:31:17 +01:00
Max Bruckner
ddadb44a67 cJSON_Raw: Additional checks in print_value 2017-01-05 21:30:37 +01:00
Max Bruckner
8c58e62597 Merge remote-tracking branch 'loigu/master' into cJSON_Raw 2017-01-05 21:07:08 +01:00
Max Bruckner
fcc89c4bb2 Move increment out of loop condition fixes #85 2016-12-15 11:12:42 +01:00
Stephan
e69db83de5 Temporarily disable warning when const is cast away. 
There was a long running discussion here
https://github.com/DaveGamble/cJSON/pull/80 how to provide const
correctness for users of cJSON.

To avoid breaking changes for users of cJSON v1 it was decided to
disable this warning.

pragma was tested with gcc 5.4.0/6.2.1 and clang 3.8/3.9.
 2016-12-08 13:21:18 +01:00
Alper Akcan
5b4420298f fix memory leak in cJSON_Duplicate 2016-12-05 14:23:04 +03:00
Max Bruckner
bf17703012 Merge branch 'print_preallocated' 2016-11-28 23:08:25 +07:00
Max Bruckner
6622c54f18 Handle out of memory when printing string 2016-11-28 23:06:38 +07:00
Kyle Chisholm
8df4cd46eb more concise return 2016-11-28 22:59:55 +07:00
Kyle Chisholm
4d1dcaa160 check print_value return 2016-11-28 22:59:54 +07:00
Kyle Chisholm
de93d76d0b changed to cJSON_PrintPreallocated, added flag in printbuffer 2016-11-28 22:59:53 +07:00
Kyle Chisholm
23dafa4739 added Print function call for pre-allocated buffer 2016-11-28 22:53:33 +07:00
Stephan
038b04d80a Take out len from condition check. 
Otherwise, the check is just undefined behaviour. gcc even takes out
this check because len can never be zero if len does not wrap around.

Found with -Wstrict-overflow=2
 2016-11-28 09:11:14 +01:00
Max Bruckner
23b269d5f9 Rename bool -> cjbool, fix #71 2016-11-25 08:19:18 +07:00
Max Bruckner
679004914f Define a boolean type 
This is not changing the behavior of the code, but it is improving the
readability and helps to make the intention clearer.

One thing to take care: 'true' should never be compared against.
 2016-11-19 17:29:22 +07:00
Max Bruckner
b88da9b0de Initialize all variables 2016-11-19 17:29:21 +07:00
Max Bruckner
a5ff796c20 Replace 0 with more expressive NULL or '\0' 2016-11-19 17:28:14 +07:00
Max Bruckner
dc4b62915a fix #10, now failing on incorrect escape sequences 2016-11-14 19:33:03 +07:00