89 lines
3.2 KiB
C
89 lines
3.2 KiB
C
/*
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Minimal subset of stdlib, none of which have to be actually implemented,
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even memory mnagement.
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*/
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#ifndef COM_STD_H
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#define COM_STD_H
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#if COM_DEF_TARGET == COM_DEF_TARGET_WASM
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#define COM_STD_INFD 0
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#define COM_STD_OUTFD 1
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#else
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/* TODO: Make it more graceful, probably with static func. */
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#include <unistd.h>
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#define COM_STD_INFD (fdopen(STDIN_FILENO, "r"))
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#define COM_STD_OUTFD (fdopen(STDOUT_FILENO, "w"))
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#endif
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/* Generic system interface, linux/bsd derived. */
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typedef void *com_std_fd;
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#define COM_STD_OPEN_READ (1 << 0)
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#define COM_STD_OPEN_WRITE (1 << 1)
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com_std_fd com_std_open(char const *path, uint32_t flags);
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bool com_std_write(com_std_fd fd, void const *data, uint32_t bytes);
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int32_t com_std_read(com_std_fd fd, void *data, uint32_t upto);
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bool com_std_has_data(com_std_fd);
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bool com_std_sfwd(com_std_fd fd, uint32_t bytes);
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com_std_fd com_std_socket(bool isnetwork);
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bool com_std_connect(com_std_fd sock, bool isnetwork, char const *address);
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void com_std_exit(uint32_t status) __attribute__((noreturn));
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void com_std_close(com_std_fd fd);
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/* TODO: Remove, use buffer semantics instead. */
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/* Instead have a mmap functions here. */
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/* Note: Freeing is done by passing 0 size to pointer. */
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void *com_std_alloc(void *ptr, size_t size);
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/* Note: Functions listed below are only available for dev builds. */
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/* Trigonometry functions are for reference testing of our own fixed point
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* implementations. Do not use otherwise. */
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#define com_std_assert(p_h) \
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do { \
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if (!(p_h)) { \
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const char msg[] = \
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"Assertion failed at "__FILE__ \
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":" COM_DEF_STRLIT(__LINE__) ": " COM_DEF_STRLIT(p_h); \
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com_std_print_str(msg, sizeof msg, true); \
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com_std_exit(-1); \
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} \
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} while (0)
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/*
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Basic printing utility that doesn't utilize format string.
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Instead a vector of arguments is passed and concatenated, based on type.
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Newline is implied at the end.
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Example: com_std_print("My unit32_t: ", 'u', value, 's', " is here");
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Format specifiers:
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'u' = uint32_t
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'i' = int32_t
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'd' = float (upcast to double with vargs)
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'c' = null terminated C string
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Our own types:
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'f' = com_fix value
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'p' = com_pnt pointer
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'v' = com_vec pointer
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's' = pointer to com_str structure
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'b' = pointer to com_buf structure
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'.' is placed at the end implicitly with macro,
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it is needed to know when to end.
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*/
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void com_std_print_(int32_t start, ...);
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#define com_std_print(...) com_std_print_(__VA_ARGS__, '.')
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void com_std_print_str(char const *str, uint32_t len, bool newline);
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double com_std_sqrt(double v);
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double com_std_fabs(double v);
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double com_std_sin(double v);
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double com_std_cos(double v);
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#endif
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