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Add basic win support #67

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Add basic win support #67

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7c01e0b
replace unportable gcc extensions
Enjection Jan 28, 2023
67a4075
replace unportable gcc extensions
Enjection Jan 28, 2023
55f7773
fix unportable headers
Enjection Jan 28, 2023
16fcfcf
small fixes
Enjection Jan 28, 2023
308d127
fix __attribute__ in diag
Enjection Jan 28, 2023
cc6fb5d
fix __attribute__
Enjection Jan 28, 2023
bf81e2b
fix ptr arithmetics
Enjection Jan 28, 2023
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124 changes: 58 additions & 66 deletions include/libfyaml.h
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,11 @@ extern "C" {

#if defined (__unix__) || (defined (__APPLE__) && defined (__MACH__))
#include <unistd.h>
#define FY_ALLOCA(x) alloca(x)
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Since we're building internally you could just define an alloca() macros instead of FY_ALLOCA and changing all the call sites...

#elif defined(_MSC_VER)
#include <BaseTsd.h>
typedef SSIZE_T ssize_t;
#define FY_ALLOCA(x) _alloca(x)
#endif

/* opaque types for the user */
Expand Down Expand Up @@ -71,9 +76,11 @@ struct fy_document_iterator;
#define FY_NT ((size_t)-1)

#if defined(__GNUC__) && __GNUC__ >= 4
#define FY_ATTRIBUTE(attr) __attribute ((attr))
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I'd like a separate PR with just the FY_ATTRIBUTE changes

#define FY_EXPORT __attribute__ ((visibility ("default")))
#define FY_DEPRECATED __attribute__ ((deprecated))
#else
#define FY_ATTRIBUTE(attr) /* nothing */
#define FY_EXPORT /* nothing */
#define FY_DEPRECATED /* nothing */
#endif
Expand All @@ -84,34 +91,32 @@ struct fy_document_iterator;
* If the _str pointer is NULL, then NULL will be returned
*/
#ifndef FY_ALLOCA_COPY_FREE
#define FY_ALLOCA_COPY_FREE(_str, _len) \
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I would like to keep the binary API and not break it.

Changing all alloca() using macros to take an extra argument breaks that.

The way this can be resolved is to define a macro with the same name and a leading underscore taking the extra argument and leaving the original macro conditional on GCC/CLang define block

for example for FY_ALLOCA_COPY_FREE

#define _FY_ALLOCA_COPY_FREE(_str, _len, _res) /* your definition */
#ifdef __FY_COMPILER_SUPPORTS_GCC_EXTENSIONS
#define FY_ALLOCA_COPY_FREE(_str, _len) \
  ({ \
    char *_res; \
    _FY_ALLOCA_COPY_FREE(_str, _len, _res); \
     _res; \
  })

({ \
char *__str = (_str), *__stra = NULL; \
size_t __len = (size_t)(_len); \
#define FY_ALLOCA_COPY_FREE(_str, _len, _res) \
do { \
char *__res, *__str = (char*)(_str); \
size_t __len = (size_t)(_len); \
__res = NULL; \
\
if (__str) { \
if (__len == FY_NT) \
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Lots of places with trailing blanks on a line.

if (__len == FY_NT) \
__len = strlen(__str); \
__stra = alloca(__len + 1); \
memcpy(__stra, __str, __len); \
__stra[__len] = '\0'; \
__res = FY_ALLOCA(__len + 1); \
memcpy(__res, __str, __len); \
(__res[__len]) = '\0'; \
free(__str); \
} \
(const char *)__stra; \
})
*(_res) = __res; \
} while(false)
#endif

/* same as above but when _str == NULL return "" */
#ifndef FY_ALLOCA_COPY_FREE_NO_NULL
#define FY_ALLOCA_COPY_FREE_NO_NULL(_str, _len) \
({ \
const char *__strb; \
\
__strb = FY_ALLOCA_COPY_FREE(_str, _len); \
if (!__strb) \
__strb = ""; \
__strb; \
})
#define FY_ALLOCA_COPY_FREE_NO_NULL(_str, _len, _res) \
do { \
FY_ALLOCA_COPY_FREE(_str, _len, _res); \
if (!*(_res)) \
*(_res) = ""; \
} while(false)
#endif

/**
Expand Down Expand Up @@ -2022,8 +2027,8 @@ fy_emit_document_to_string(struct fy_document *fyd,
enum fy_emitter_cfg_flags flags)
FY_EXPORT;

#define fy_emit_document_to_string_alloca(_fyd, _flags) \
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No API changes please...

FY_ALLOCA_COPY_FREE(fy_emit_document_to_string((_fyd), (_flags)), FY_NT)
#define fy_emit_document_to_string_alloca(_fyd, _flags, _res) \
FY_ALLOCA_COPY_FREE(fy_emit_document_to_string((_fyd), (_flags)), FY_NT, (_res))

/**
* fy_emit_node_to_buffer() - Emit a node (recursively) to a buffer
Expand Down Expand Up @@ -2061,8 +2066,8 @@ char *
fy_emit_node_to_string(struct fy_node *fyn, enum fy_emitter_cfg_flags flags)
FY_EXPORT;

#define fy_emit_node_to_string_alloca(_fyn, _flags) \
FY_ALLOCA_COPY_FREE(fy_emit_node_to_string((_fyn), (_flags)), FY_NT)
#define fy_emit_node_to_string_alloca(_fyn, _flags, _res) \
FY_ALLOCA_COPY_FREE(fy_emit_node_to_string((_fyn), (_flags)), FY_NT, (_res))

/**
* fy_emit_to_buffer() - Create an emitter for buffer output.
Expand Down Expand Up @@ -2669,7 +2674,7 @@ fy_document_vbuildf(const struct fy_parse_cfg *cfg,
*/
struct fy_document *
fy_document_buildf(const struct fy_parse_cfg *cfg, const char *fmt, ...)
__attribute__((format(printf, 2, 3)))
FY_ATTRIBUTE(format(printf, 2, 3))
FY_EXPORT;

/**
Expand Down Expand Up @@ -3054,7 +3059,7 @@ fy_node_vbuildf(struct fy_document *fyd, const char *fmt, va_list ap)
*/
struct fy_node *
fy_node_buildf(struct fy_document *fyd, const char *fmt, ...)
__attribute__((format(printf, 2, 3)))
FY_ATTRIBUTE(format(printf, 2, 3))
FY_EXPORT;

/**
Expand Down Expand Up @@ -3110,8 +3115,8 @@ char *
fy_node_get_path(struct fy_node *fyn)
FY_EXPORT;

#define fy_node_get_path_alloca(_fyn) \
FY_ALLOCA_COPY_FREE_NO_NULL(fy_node_get_path((_fyn)), FY_NT)
#define fy_node_get_path_alloca(_fyn, _res) \
FY_ALLOCA_COPY_FREE_NO_NULL(fy_node_get_path((_fyn)), FY_NT, (_res))

/**
* fy_node_get_parent() - Get the parent node of a node
Expand Down Expand Up @@ -3162,8 +3167,8 @@ char *
fy_node_get_parent_address(struct fy_node *fyn)
FY_EXPORT;

#define fy_node_get_parent_address_alloca(_fyn) \
FY_ALLOCA_COPY_FREE_NO_NULL(fy_node_get_parent_address((_fyn)), FY_NT)
#define fy_node_get_parent_address_alloca(_fyn, _res) \
FY_ALLOCA_COPY_FREE_NO_NULL(fy_node_get_parent_address((_fyn)), FY_NT, (_res))

/**
* fy_node_get_path_relative_to() - Get a path address of a node
Expand All @@ -3184,8 +3189,8 @@ char *
fy_node_get_path_relative_to(struct fy_node *fyn_parent, struct fy_node *fyn)
FY_EXPORT;

#define fy_node_get_path_relative_to_alloca(_fynp, _fyn) \
FY_ALLOCA_COPY_FREE_NO_NULL(fy_node_get_path_relative_to((_fynp), (_fyn)), FY_NT)
#define fy_node_get_path_relative_to_alloca(_fynp, _fyn, _res) \
FY_ALLOCA_COPY_FREE_NO_NULL(fy_node_get_path_relative_to((_fynp), (_fyn)), FY_NT, (_res))

/**
* fy_node_get_short_path() - Get a path address of a node in the shortest
Expand Down Expand Up @@ -3217,8 +3222,8 @@ char *
fy_node_get_short_path(struct fy_node *fyn)
FY_EXPORT;

#define fy_node_get_short_path_alloca(_fyn) \
FY_ALLOCA_COPY_FREE_NO_NULL(fy_node_get_short_path((_fyn)), FY_NT)
#define fy_node_get_short_path_alloca(_fyn, _res) \
FY_ALLOCA_COPY_FREE_NO_NULL(fy_node_get_short_path((_fyn)), FY_NT, (_res))

/**
* fy_node_get_reference() - Get a textual reference to a node
Expand All @@ -3240,8 +3245,8 @@ char *
fy_node_get_reference(struct fy_node *fyn)
FY_EXPORT;

#define fy_node_get_reference_alloca(_fyn) \
FY_ALLOCA_COPY_FREE_NO_NULL(fy_node_get_reference((_fyn)), FY_NT)
#define fy_node_get_reference_alloca(_fyn, _res) \
FY_ALLOCA_COPY_FREE_NO_NULL(fy_node_get_reference((_fyn)), FY_NT, (_res))

/**
* fy_node_create_reference() - Create an alias reference node
Expand Down Expand Up @@ -3284,8 +3289,8 @@ char *
fy_node_get_relative_reference(struct fy_node *fyn_base, struct fy_node *fyn)
FY_EXPORT;

#define fy_node_get_relative_reference_alloca(_fynb, _fyn) \
FY_ALLOCA_COPY_FREE_NO_NULL(fy_node_get_relative_reference((_fynb), (_fyn)), FY_NT)
#define fy_node_get_relative_reference_alloca(_fynb, _fyn, _res) \
FY_ALLOCA_COPY_FREE_NO_NULL(fy_node_get_relative_reference((_fynb), (_fyn)), FY_NT, (_res))

/**
* fy_node_create_relative_reference() - Create an alias reference node
Expand Down Expand Up @@ -3389,7 +3394,7 @@ fy_node_create_vscalarf(struct fy_document *fyd, const char *fmt, va_list ap)
struct fy_node *
fy_node_create_scalarf(struct fy_document *fyd, const char *fmt, ...)
FY_EXPORT
__attribute__((format(printf, 2, 3)));
FY_ATTRIBUTE(format(printf, 2, 3));

/**
* fy_node_create_sequence() - Create an empty sequence node.
Expand Down Expand Up @@ -4224,7 +4229,7 @@ int fy_node_vscanf(struct fy_node *fyn, const char *fmt, va_list ap);
*/
int
fy_node_scanf(struct fy_node *fyn, const char *fmt, ...)
__attribute__((format(scanf, 2, 3)))
FY_ATTRIBUTE(format(scanf, 2, 3))
FY_EXPORT;

/**
Expand Down Expand Up @@ -4275,7 +4280,7 @@ fy_document_vscanf(struct fy_document *fyd, const char *fmt, va_list ap)
*/
int
fy_document_scanf(struct fy_document *fyd, const char *fmt, ...)
__attribute__((format(scanf, 2, 3)))
FY_ATTRIBUTE(format(scanf, 2, 3))
FY_EXPORT;

/**
Expand Down Expand Up @@ -4571,7 +4576,7 @@ fy_node_set_vanchorf(struct fy_node *fyn, const char *fmt, va_list ap)
*/
int
fy_node_set_anchorf(struct fy_node *fyn, const char *fmt, ...)
FY_EXPORT __attribute__((format(printf, 2, 3)));
FY_EXPORT FY_ATTRIBUTE(format(printf, 2, 3));

/**
* fy_node_remove_anchor() - Remove an anchor
Expand Down Expand Up @@ -4839,7 +4844,7 @@ fy_node_vreport(struct fy_node *fyn, enum fy_error_type type,
void
fy_node_report(struct fy_node *fyn, enum fy_error_type type,
const char *fmt, ...)
__attribute__((format(printf, 3, 4)))
FY_ATTRIBUTE(format(printf, 3, 4))
FY_EXPORT;

/**
Expand Down Expand Up @@ -4890,7 +4895,7 @@ void
fy_node_override_report(struct fy_node *fyn, enum fy_error_type type,
const char *file, int line, int column,
const char *fmt, ...)
__attribute__((format(printf, 6, 7)))
FY_ATTRIBUTE(format(printf, 6, 7))
FY_EXPORT;

typedef void (*fy_diag_output_fn)(struct fy_diag *diag, void *user,
Expand Down Expand Up @@ -5170,7 +5175,7 @@ fy_diag_vprintf(struct fy_diag *diag, const char *fmt, va_list ap)
int
fy_diag_printf(struct fy_diag *diag, const char *fmt, ...)
FY_EXPORT
__attribute__((format(printf, 2, 3)));
FY_ATTRIBUTE(format(printf, 2, 3));

/**
* struct fy_diag_ctx - The diagnostics context
Expand Down Expand Up @@ -5237,22 +5242,9 @@ int
fy_diagf(struct fy_diag *diag, const struct fy_diag_ctx *fydc,
const char *fmt, ...)
FY_EXPORT
__attribute__((format(printf, 3, 4)));
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This would be fine as a separate PR


#define fy_diag_diag(_diag, _level, _fmt, ...) \
({ \
struct fy_diag_ctx _ctx = { \
.level = (_level), \
.module = FYEM_UNKNOWN, \
.source_func = __func__, \
.source_file = __FILE__, \
.source_line = __LINE__, \
.file = NULL, \
.line = 0, \
.column = 0, \
}; \
fy_diagf((_diag), &_ctx, (_fmt) , ## __VA_ARGS__); \
})
FY_ATTRIBUTE(format(printf, 3, 4));

int fy_diag_diag(struct fy_diag *diag, enum fy_error_type level, const char* fmt, ...);

#ifndef NDEBUG

Expand Down Expand Up @@ -5310,7 +5302,7 @@ fy_diag_node_vreport(struct fy_diag *diag, struct fy_node *fyn,
void
fy_diag_node_report(struct fy_diag *diag, struct fy_node *fyn,
enum fy_error_type type, const char *fmt, ...)
__attribute__((format(printf, 4, 5)))
FY_ATTRIBUTE(format(printf, 4, 5))
FY_EXPORT;

/**
Expand Down Expand Up @@ -5365,7 +5357,7 @@ void
fy_diag_node_override_report(struct fy_diag *diag, struct fy_node *fyn,
enum fy_error_type type, const char *file,
int line, int column, const char *fmt, ...)
__attribute__((format(printf, 7, 8)))
FY_ATTRIBUTE(format(printf, 7, 8))
FY_EXPORT;

/**
Expand Down Expand Up @@ -6889,8 +6881,8 @@ char *
fy_path_component_get_text(struct fy_path_component *fypc)
FY_EXPORT;

#define fy_path_component_get_text_alloca(_fypc) \
FY_ALLOCA_COPY_FREE(fy_path_component_get_text((_fypc)), FY_NT)
#define fy_path_component_get_text_alloca(_fypc, _res) \
FY_ALLOCA_COPY_FREE(fy_path_component_get_text((_fypc)), FY_NT, (_res))
/**
* fy_path_depth() - Get the depth of a path
*
Expand Down Expand Up @@ -6937,8 +6929,8 @@ char *
fy_path_get_text(struct fy_path *fypp)
FY_EXPORT;

#define fy_path_get_text_alloca(_fypp) \
FY_ALLOCA_COPY_FREE(fy_path_get_text((_fypp)), FY_NT)
#define fy_path_get_text_alloca(_fypp, _res) \
FY_ALLOCA_COPY_FREE(fy_path_get_text((_fypp)), FY_NT, (_res))

/**
* fy_path_in_root() - Check if the path is in the root of the document
Expand Down
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