noarch

package
v0.25.2 Latest Latest
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 Go to latest Published: Jun 29, 2018 License: MIT Imports: 15 Imported by: 0

Documentation

Overview

Package noarch contains low-level functions that apply to multiple platforms.

Index

Constants

View Source 
const (
	EPERM   = 1  // Operation not permitted
	ENOENT  = 2  // No such file or directory
	ESRCH   = 3  // No such process
	EINTR   = 4  // Interrupted system call
	EIO     = 5  // I/O error
	ENXIO   = 6  // No such device or address
	E2BIG   = 7  // Argument list too long
	ENOEXEC = 8  // Exec format error
	EBADF   = 9  // Bad file number
	ECHILD  = 10 // No child processes
	EAGAIN  = 11 // Try again
	ENOMEM  = 12 // Out of memory
	EACCES  = 13 // Permission denied
	EFAULT  = 14 // Bad address
	ENOTBLK = 15 // Block device required
	EBUSY   = 16 // Device or resource busy
	EEXIST  = 17 // File exists
	EXDEV   = 18 // Cross-device link
	ENODEV  = 19 // No such device
	ENOTDIR = 20 // Not a directory
	EISDIR  = 21 // Is a directory
	EINVAL  = 22 // Invalid argument
	ENFILE  = 23 // File table overflow
	EMFILE  = 24 // Too many open files
	ENOTTY  = 25 // Not a typewriter
	ETXTBSY = 26 // Text file busy
	EFBIG   = 27 // File too large
	ENOSPC  = 28 // No space left on device
	ESPIPE  = 29 // Illegal seek
	EROFS   = 30 // Read-only file system
	EMLINK  = 31 // Too many links
	EPIPE   = 32 // Broken pipe
	EDOM    = 33 // Math argument out of domain of func
	ERANGE  = 34 // Math result not representable

	EDEADLK      = 35     // Resource deadlock would occur
	ENAMETOOLONG = 36     // File name too long
	ENOLCK       = 37     // No record locks available
	ENOSYS       = 38     // Function not implemented
	ENOTEMPTY    = 39     // Directory not empty
	ELOOP        = 40     // Too many symbolic links encountered
	EWOULDBLOCK  = EAGAIN // Operation would block
	ENOMSG       = 42     // No message of desired type
	EIDRM        = 43     // Identifier removed
	ECHRNG       = 44     // Channel number out of range
	EL2NSYNC     = 45     // Level 2 not synchronized
	EL3HLT       = 46     // Level 3 halted
	EL3RST       = 47     // Level 3 reset
	ELNRNG       = 48     // Link number out of range
	EUNATCH      = 49     // Protocol driver not attached
	ENOCSI       = 50     // No CSI structure available
	EL2HLT       = 51     // Level 2 halted
	EBADE        = 52     // Invalid exchange
	EBADR        = 53     // Invalid request descriptor
	EXFULL       = 54     // Exchange full
	ENOANO       = 55     // No anode
	EBADRQC      = 56     // Invalid request code
	EBADSLT      = 57     // Invalid slot

	EDEADLOCK = EDEADLK

	EBFONT          = 59  // Bad font file format
	ENOSTR          = 60  // Device not a stream
	ENODATA         = 61  // No data available
	ETIME           = 62  // Timer expired
	ENOSR           = 63  // Out of streams resources
	ENONET          = 64  // Machine is not on the network
	ENOPKG          = 65  // Package not installed
	EREMOTE         = 66  // Object is remote
	ENOLINK         = 67  // Link has been severed
	EADV            = 68  // Advertise error
	ESRMNT          = 69  // Srmount error
	ECOMM           = 70  // Communication error on send
	EPROTO          = 71  // Protocol error
	EMULTIHOP       = 72  // Multihop attempted
	EDOTDOT         = 73  // RFS specific error
	EBADMSG         = 74  // Not a data message
	EOVERFLOW       = 75  // Value too large for defined data type
	ENOTUNIQ        = 76  // Name not unique on network
	EBADFD          = 77  // File descriptor in bad state
	EREMCHG         = 78  // Remote address changed
	ELIBACC         = 79  // Can not access a needed shared library
	ELIBBAD         = 80  // Accessing a corrupted shared library
	ELIBSCN         = 81  // .lib section in a.out corrupted
	ELIBMAX         = 82  // Attempting to link in too many shared libraries
	ELIBEXEC        = 83  // Cannot exec a shared library directly
	EILSEQ          = 84  // Illegal byte sequence
	ERESTART        = 85  // Interrupted system call should be restarted
	ESTRPIPE        = 86  // Streams pipe error
	EUSERS          = 87  // Too many users
	ENOTSOCK        = 88  // Socket operation on non-socket
	EDESTADDRREQ    = 89  // Destination address required
	EMSGSIZE        = 90  // Message too long
	EPROTOTYPE      = 91  // Protocol wrong type for socket
	ENOPROTOOPT     = 92  // Protocol not available
	EPROTONOSUPPORT = 93  // Protocol not supported
	ESOCKTNOSUPPORT = 94  // Socket type not supported
	EOPNOTSUPP      = 95  // Operation not supported on transport endpoint
	EPFNOSUPPORT    = 96  // Protocol family not supported
	EAFNOSUPPORT    = 97  // Address family not supported by protocol
	EADDRINUSE      = 98  // Address already in use
	EADDRNOTAVAIL   = 99  // Cannot assign requested address
	ENETDOWN        = 100 // Network is down
	ENETUNREACH     = 101 // Network is unreachable
	ENETRESET       = 102 // Network dropped connection because of reset
	ECONNABORTED    = 103 // Software caused connection abort
	ECONNRESET      = 104 // Connection reset by peer
	ENOBUFS         = 105 // No buffer space available
	EISCONN         = 106 // Transport endpoint is already connected
	ENOTCONN        = 107 // Transport endpoint is not connected
	ESHUTDOWN       = 108 // Cannot send after transport endpoint shutdown
	ETOOMANYREFS    = 109 // Too many references: cannot splice
	ETIMEDOUT       = 110 // Connection timed out
	ECONNREFUSED    = 111 // Connection refused
	EHOSTDOWN       = 112 // Host is down
	EHOSTUNREACH    = 113 // No route to host
	EALREADY        = 114 // Operation already in progress
	EINPROGRESS     = 115 // Operation now in progress
	ESTALE          = 116 // Stale NFS file handle
	EUCLEAN         = 117 // Structure needs cleaning
	ENOTNAM         = 118 // Not a XENIX named type file
	ENAVAIL         = 119 // No XENIX semaphores available
	EISNAM          = 120 // Is a named type file
	EREMOTEIO       = 121 // Remote I/O error
	EDQUOT          = 122 // Quota exceeded

	ENOMEDIUM    = 123 // No medium found
	EMEDIUMTYPE  = 124 // Wrong medium type
	ECANCELED    = 125 // Operation Canceled
	ENOKEY       = 126 // Required key not available
	EKEYEXPIRED  = 127 // Key has expired
	EKEYREVOKED  = 128 // Key has been revoked
	EKEYREJECTED = 129 // Key was rejected by service

	// for robust mutexes
	EOWNERDEAD      = 130 // Owner died
	ENOTRECOVERABLE = 131 // State not recoverable
)
View Source 
const EOF = -int32(1)

Variables

View Source 
var (
	Stdin  = NewFile(os.Stdin)
	Stdout = NewFile(os.Stdout)
	Stderr = NewFile(os.Stderr)
)

Programs generated by c2go will reference noarch.Stdin instead of os.Stdin directly so that under test these can be replaced. This is required because "go test" does not redirect the stdin to the executable it is testing.

Functions

func Abs added in v0.16.0 

func Abs(n int32) int32

Abs returns the absolute value of parameter n.

In C++, this function is also overloaded in header <cmath> for floating-point types (see cmath abs), in header <complex> for complex numbers (see complex abs), and in header <valarray> for valarrays (see valarray abs).

func Asctime added in v0.21.8 

func Asctime(tm *Tm) *byte

Asctime - Convert tm structure to string

func Atof added in v0.16.0 

func Atof(str *byte) float64

Atof parses the C string str, interpreting its content as a floating point number and returns its value as a double.

The function first discards as many whitespace characters (as in isspace) as necessary until the first non-whitespace character is found. Then, starting from this character, takes as many characters as possible that are valid following a syntax resembling that of floating point literals (see below), and interprets them as a numerical value. The rest of the string after the last valid character is ignored and has no effect on the behavior of this function.

C90 (C++98): A valid floating point number for atof using the "C" locale is formed by an optional sign character (+ or -), followed by a sequence of digits, optionally containing a decimal-point character (.), optionally followed by an exponent part (an e or E character followed by an optional sign and a sequence of digits).

C99/C11 (C++11): A valid floating point number for atof using the "C" locale is formed by an optional sign character (+ or -), followed by one of:

  • A sequence of digits, optionally containing a decimal-point character (.), optionally followed by an exponent part (an e or E character followed by an optional sign and a sequence of digits).
  • A 0x or 0X prefix, then a sequence of hexadecimal digits (as in isxdigit) optionally containing a period which separates the whole and fractional number parts. Optionally followed by a power of 2 exponent (a p or P character followed by an optional sign and a sequence of hexadecimal digits).
  • INF or INFINITY (ignoring case).
  • NAN or NANsequence (ignoring case), where sequence is a sequence of characters, where each character is either an alphanumeric character (as in isalnum) or the underscore character (_).

If the first sequence of non-whitespace characters in str does not form a valid floating-point number as just defined, or if no such sequence exists because either str is empty or contains only whitespace characters, no conversion is performed and the function returns 0.0.

func Atoi added in v0.9.0 

func Atoi(str *byte) int32

Atoi parses the C-string str interpreting its content as an integral number, which is returned as a value of type int.

The function first discards as many whitespace characters (as in isspace) as necessary until the first non-whitespace character is found. Then, starting from this character, takes an optional initial plus or minus sign followed by as many base-10 digits as possible, and interprets them as a numerical value.

The string can contain additional characters after those that form the integral number, which are ignored and have no effect on the behavior of this function.

If the first sequence of non-whitespace characters in str is not a valid integral number, or if no such sequence exists because either str is empty or it contains only whitespace characters, no conversion is performed and zero is returned.

func Atol added in v0.16.0 

func Atol(str *byte) int32

Atol parses the C-string str interpreting its content as an integral number, which is returned as a value of C type "long int".

The function first discards as many whitespace characters (as in isspace) as necessary until the first non-whitespace character is found. Then, starting from this character, takes an optional initial plus or minus sign followed by as many base-10 digits as possible, and interprets them as a numerical value.

The string can contain additional characters after those that form the integral number, which are ignored and have no effect on the behavior of this function.

If the first sequence of non-whitespace characters in str is not a valid integral number, or if no such sequence exists because either str is empty or it contains only whitespace characters, no conversion is performed and zero is returned.

func Atoll added in v0.16.0 

func Atoll(str *byte) int64

Atoll parses the C-string str interpreting its content as an integral number, which is returned as a value of C type long long int.

This function operates like atol to interpret the string, but produces numbers of type long long int (see atol for details on the interpretation process).

func BoolToInt 

func BoolToInt(x bool) int32

BoolToInt converts boolean value to an int, which is a common operation in C. 0 and 1 represent false and true respectively.

func CPointerToGoPointer added in v0.14.0 

func CPointerToGoPointer(a interface{}) interface{}

CPointerToGoPointer converts a C-style pointer into a Go-style pointer.

C pointers are represented as slices that have one element pointing to where the original C pointer would be referencing. This isn't useful if the pointed value needs to be passed to another Go function in these libraries.

See also GoPointerToCPointer.

func CStringIsNull added in v0.13.0 

func CStringIsNull(s *byte) bool

CStringIsNull will test if a C string is NULL. This is equivalent to: 

s == NULL

func CStringToString added in v0.14.0 

func CStringToString(s *byte) string

CStringToString returns a string that contains all the bytes in the provided C string up until the first NULL character.

func CastInterfaceToPointer added in v0.25.0 

func CastInterfaceToPointer(in interface{}) unsafe.Pointer

CastInterfaceToPointer will take an interface and store it in a map by its reflect.Value the unsafe.Pointer to its containing InterfaceWrapper is returned. Since no element is ever removed from the map this should only be used for a limited amount of elements, like function pointers.

func Clearerr added in v0.24.2 

func Clearerr(stream *File)

Clearerr handles clearerr().

Resets both the error and the eof indicators of the stream.

When a i/o function fails either because of an error or because the end of the file has been reached, one of these internal indicators may be set for the stream. The state of these indicators is cleared by a call to this function, or by a call to any of: rewind, fseek, fsetpos and freopen.

func Closelog added in v0.22.2 

func Closelog()

void closelog(void);

func Ctime added in v0.16.7 

func Ctime(tloc *TimeT) *byte

Ctime converts TimeT to a string.

func Errno added in v0.24.0 

func Errno() *int32

Errno returns a pointer to the current errno.

func Exit added in v0.23.0 

func Exit(exitCode int32)

Exit uses os.Exit to stop program execution.

func Fclose added in v0.9.0 

func Fclose(f *File) int32

Fclose handles fclose().

Closes the file associated with the stream and disassociates it.

All internal buffers associated with the stream are disassociated from it and flushed: the content of any unwritten output buffer is written and the content of any unread input buffer is discarded.

Even if the call fails, the stream passed as parameter will no longer be associated with the file nor its buffers.

func Feof added in v0.11.0 

func Feof(stream *File) int32

Feof handles feof().

Checks whether the end-of-File indicator associated with stream is set, returning a value different from zero if it is.

This indicator is generally set by a previous operation on the stream that attempted to read at or past the end-of-file.

Notice that stream's internal position indicator may point to the end-of-file for the next operation, but still, the end-of-file indicator may not be set until an operation attempts to read at that point.

This indicator is cleared by a call to clearerr, rewind, fseek, fsetpos or freopen. Although if the position indicator is not repositioned by such a call, the next i/o operation is likely to set the indicator again.

func Ferror added in v0.24.2 

func Ferror(stream *File) int32

Ferror handles ferror().

Checks if the error indicator associated with stream is set, returning a value different from zero if it is.

This indicator is generally set by a previous operation on the stream that failed, and is cleared by a call to clearerr, rewind or freopen.

func Fflush added in v0.11.0 

func Fflush(stream *File) int32

Fflush handles fflush().

If the given stream was open for writing (or if it was open for updating and the last i/o operation was an output operation) any unwritten data in its output buffer is written to the file.

If stream is a null pointer, all such streams should be flushed, but this is currently not supported.

The stream remains open after this call.

When a file is closed, either because of a call to fclose or because the program terminates, all the buffers associated with it are automatically flushed.

func Fgetc added in v0.11.0 

func Fgetc(stream *File) (ret int32)

Fgetc handles fgetc().

Returns the character currently pointed by the internal file position indicator of the specified stream. The internal file position indicator is then advanced to the next character.

If the stream is at the end-of-file when called, the function returns EOF and sets the end-of-file indicator for the stream (feof).

If a read error occurs, the function returns EOF and sets the error indicator for the stream (ferror).

fgetc and getc are equivalent, except that getc may be implemented as a macro in some libraries.

func Fgetpos added in v0.11.0 

func Fgetpos(f *File, pos *int32) int32

Fgetpos handles fgetpos().

Retrieves the current position in the stream.

The function fills the fpos_t object pointed by pos with the information needed from the stream's position indicator to restore the stream to its current position (and multibyte state, if wide-oriented) with a call to fsetpos.

The ftell function can be used to retrieve the current position in the stream as an integer value.

func Fgets added in v0.11.0 

func Fgets(str *byte, num int32, stream *File) *byte

Fgets handles fgets().

Reads characters from stream and stores them as a C string into str until (num-1) characters have been read or either a newline or the end-of-file is reached, whichever happens first.

A newline character makes fgets stop reading, but it is considered a valid character by the function and included in the string copied to str.

A terminating null character is automatically appended after the characters copied to str.

Notice that fgets is quite different from gets: not only fgets accepts a stream argument, but also allows to specify the maximum size of str and includes in the string any ending newline character.

func Fprintf added in v0.11.0 

func Fprintf(f *File, format *byte, args ...interface{}) int32

Fprintf handles fprintf().

Writes the C string pointed by format to the stream. If format includes format specifiers (subsequences beginning with %), the additional arguments following format are formatted and inserted in the resulting string replacing their respective specifiers.

After the format parameter, the function expects at least as many additional arguments as specified by format.

func Fputc added in v0.11.0 

func Fputc(c int32, f *File) int32

Fputc handles fputc().

Writes a character to the stream and advances the position indicator.

The character is written at the position indicated by the internal position indicator of the stream, which is then automatically advanced by one.

func Fputs added in v0.11.0 

func Fputs(str *byte, stream *File) int32

Fputs handles fputs().

Writes the C string pointed by str to the stream.

The function begins copying from the address specified (str) until it reaches the terminating null character ('\0'). This terminating null-character is not copied to the stream.

Notice that fputs not only differs from puts in that the destination stream can be specified, but also fputs does not write additional characters, while puts appends a newline character at the end automatically.

func Fread added in v0.11.0 

func Fread(ptr unsafe.Pointer, size1, size2 int32, f *File) int32

Fread handles fread().

Reads an array of count elements, each one with a size of size bytes, from the stream and stores them in the block of memory specified by ptr.

The position indicator of the stream is advanced by the total amount of bytes read.

The total amount of bytes read if successful is (size*count).

func Free added in v0.12.0 

func Free(anything unsafe.Pointer)

Free removes the reference to this memory address, so that the Go GC can free it.

func Fscanf added in v0.11.0 

func Fscanf(f *File, format *byte, args ...interface{}) int32

Fscanf handles fscanf().

Reads data from the stream and stores them according to the parameter format into the locations pointed by the additional arguments.

The additional arguments should point to already allocated objects of the type specified by their corresponding format specifier within the format string.

func Fseek added in v0.11.0 

func Fseek(f *File, offset int32, origin int32) int32

Fseek handles fseek().

Sets the position indicator associated with the stream to a new position.

For streams open in binary mode, the new position is defined by adding offset to a reference position specified by origin.

For streams open in text mode, offset shall either be zero or a value returned by a previous call to ftell, and origin shall necessarily be SEEK_SET.

If the function is called with other values for these arguments, support depends on the particular system and library implementation (non-portable).

The end-of-file internal indicator of the stream is cleared after a successful call to this function, and all effects from previous calls to ungetc on this stream are dropped.

On streams open for update (read+write), a call to fseek allows to switch between reading and writing.

func Fsetpos added in v0.11.0 

func Fsetpos(stream *File, pos *int32) int32

Fsetpos handles fsetpos().

Restores the current position in the stream to pos.

The internal file position indicator associated with stream is set to the position represented by pos, which is a pointer to an fpos_t object whose value shall have been previously obtained by a call to fgetpos.

The end-of-file internal indicator of the stream is cleared after a successful call to this function, and all effects from previous calls to ungetc on this stream are dropped.

On streams open for update (read+write), a call to fsetpos allows to switch between reading and writing.

A similar function, fseek, can be used to set arbitrary positions on streams open in binary mode.

func Ftell added in v0.11.0 

func Ftell(f *File) int32

Ftell handles ftell().

Returns the current value of the position indicator of the stream.

For binary streams, this is the number of bytes from the beginning of the file.

For text streams, the numerical value may not be meaningful but can still be used to restore the position to the same position later using fseek (if there are characters put back using ungetc still pending of being read, the behavior is undefined).

func Fwrite added in v0.11.0 

func Fwrite(str *byte, size1, size2 int32, stream *File) int32

Fwrite handles fwrite().

Writes an array of count elements, each one with a size of size bytes, from the block of memory pointed by ptr to the current position in the stream.

The position indicator of the stream is advanced by the total number of bytes written.

Internally, the function interprets the block pointed by ptr as if it was an array of (size*count) elements of type unsigned char, and writes them sequentially to stream as if fputc was called for each byte.

func Getchar added in v0.11.0 

func Getchar() int32

Getchar handles getchar().

Returns the next character from the standard input (stdin).

It is equivalent to calling getc with stdin as argument.

func Getenv added in v0.16.0 

func Getenv(name *byte) *byte

Getenv retrieves a C-string containing the value of the environment variable whose name is specified as argument. If the requested variable is not part of the environment list, the function returns a null pointer.

The pointer returned points to an internal memory block, whose content or validity may be altered by further calls to getenv (but not by other library functions).

The string pointed by the pointer returned by this function shall not be modified by the program. Some systems and library implementations may allow to change environmental variables with specific functions (putenv, setenv...), but such functionality is non-portable.

func GoPointerToCPointer added in v0.14.0 

func GoPointerToCPointer(destination interface{}, value interface{})

GoPointerToCPointer does the opposite of CPointerToGoPointer.

A Go pointer (simply a pointer) is converted back into the original slice structure (of the original slice reference) so that the calling functions will be able to see the new data of that pointer.

func IsNaN added in v0.13.0 

func IsNaN(x float64) int32

func Labs added in v0.16.0 

func Labs(n int32) int32

Labs returns the absolute value of parameter n ( /n/ ).

This is the long int version of abs.

func Ldexp added in v0.23.0 

func Ldexp(frac float64, exp int32) float64

Ldexp is the inverse of Frexp. Ldexp uses math.Ldexp to calculate the value.

func Llabs added in v0.16.0 

func Llabs(n int64) int64

Llabs returns the absolute value of parameter n ( /n/ ).

This is the long long int version of abs.

func Malloc added in v0.25.0 

func Malloc(numBytes int32) unsafe.Pointer

Malloc returns a pointer to a memory block of the given length.

To prevent the Go garbage collector from collecting this memory, we store the whole block in a map.

func Memcmp added in v0.23.3 

func Memcmp(src1, src2 unsafe.Pointer, n int32) int32

Memcmp compares two binary arrays upto n bytes. Different from strncmp, memcmp does not stop at the first NULL byte.

func Memcpy added in v0.23.1 

func Memcpy(dst unsafe.Pointer, src unsafe.Pointer, size int32) unsafe.Pointer

Memcpy treats dst and src as binary arrays and copies size bytes from src to dst. Returns dst. While in C it it is undefined behavior to call memcpy with overlapping regions, in Go we rely on the built-in copy function, which has no such limitation. To copy overlapping regions in C memmove should be used, so we map that function to Memcpy as well.

func Memset added in v0.23.1 

func Memset(dst unsafe.Pointer, val int32, size int32) unsafe.Pointer

Memset treats dst as a binary array and sets size bytes to the value val. Returns dst.

func NotInt 

func NotInt(x int) int

NotInt performs a logical not (!) on an integer and returns an integer.

func NotInt32 added in v0.23.0 

func NotInt32(x int32) int32

NotInt32 works the same as NotInt, but on a int32.

func NotInt8 added in v0.23.0 

func NotInt8(x int8) int8

NotInt8 works the same as NotInt, but on a int8.

func NotUint16 added in v0.9.0 

func NotUint16(x uint16) uint16

NotUint16 works the same as NotInt, but on a uint16.

func Openlog added in v0.22.2 

func Openlog(ident *byte, logopt int32, facility int32)

void openlog(const char *, int, int); TODO: handle option parameter

func Perror added in v0.24.2 

func Perror(str *byte)

Perror handles perror().

Interprets the value of errno as an error message, and prints it to stderr (the standard error output stream, usually the console), optionally preceding it with the custom message specified in str.

errno is an integral variable whose value describes the error condition or diagnostic information produced by a call to a library function (any function of the C standard library may set a value for errno, even if not explicitly specified in this reference, and even if no error happened), see errno for more info.

If the parameter str is not a null pointer, str is printed followed by a colon (:) and a space. Then, whether str was a null pointer or not, the generated error description is printed followed by a newline character ('\n').

perror should be called right after the error was produced, otherwise it can be overwritten by calls to other functions.

func Printf added in v0.12.0 

func Printf(format *byte, args ...interface{}) int32

Printf handles printf().

Writes the C string pointed by format to the standard output (stdout). If format includes format specifiers (subsequences beginning with %), the additional arguments following format are formatted and inserted in the resulting string replacing their respective specifiers.

func Putchar added in v0.13.7 

func Putchar(character int32)

Putchar handles putchar().

Writes a character to the standard output (stdout).

It is equivalent to calling putc with stdout as second argument.

func Puts added in v0.12.0 

func Puts(str *byte) int32

Puts handles puts().

Writes the C string pointed by str to the standard output (stdout) and appends a newline character ('\n').

The function begins copying from the address specified (str) until it reaches the terminating null character ('\0'). This terminating null-character is not copied to the stream.

Notice that puts not only differs from fputs in that it uses stdout as destination, but it also appends a newline character at the end automatically (which fputs does not).

func Rand added in v0.23.0 

func Rand() int32

Rand returns a random number using math/rand.Int().

func Remove added in v0.11.0 

func Remove(filePath *byte) int32

Remove handles remove().

Deletes the file whose name is specified in filePath.

This is an operation performed directly on a file identified by its filePath; No streams are involved in the operation.

Proper file access shall be available.

func Rename added in v0.11.0 

func Rename(oldName, newName *byte) int32

Rename handles rename().

Changes the name of the file or directory specified by oldName to newName.

This is an operation performed directly on a file; No streams are involved in the operation.

If oldName and newName specify different paths and this is supported by the system, the file is moved to the new location.

If newName names an existing file, the function may either fail or override the existing file, depending on the specific system and library implementation.

Proper file access shall be available.

func Rewind added in v0.11.0 

func Rewind(stream *File)

Rewind handles rewind().

Sets the position indicator associated with stream to the beginning of the file.

The end-of-file and error internal indicators associated to the stream are cleared after a successful call to this function, and all effects from previous calls to ungetc on this stream are dropped.

On streams open for update (read+write), a call to rewind allows to switch between reading and writing.

func Scanf added in v0.12.0 

func Scanf(format *byte, args ...interface{}) int32

Scanf handles scanf().

Reads data from stdin and stores them according to the parameter format into the locations pointed by the additional arguments.

The additional arguments should point to already allocated objects of the type specified by their corresponding format specifier within the format string.

func Setlogmask added in v0.22.2 

func Setlogmask(mask int32) int32

int setlogmask(int); TODO

func Signbitd added in v0.13.0 

func Signbitd(x float64) int32

func Signbitf added in v0.13.0 

func Signbitf(x float32) int32

func Signbitl added in v0.13.0 

func Signbitl(x float64) int32

func Snprintf added in v0.20.0 

func Snprintf(buffer *byte, n int32, format *byte, args ...interface{}) int32

Snprintf handles snprintf().

Writes the C string pointed by format to the standard output (stdout). If format includes format specifiers (subsequences beginning with %), the additional arguments following format are formatted and inserted in the resulting string replacing their respective specifiers.

func Sprintf added in v0.20.0 

func Sprintf(buffer, format *byte, args ...interface{}) int32

Sprintf handles sprintf().

Writes the C string pointed by format to the standard output (stdout). If format includes format specifiers (subsequences beginning with %), the additional arguments following format are formatted and inserted in the resulting string replacing their respective specifiers.

func Strcasestr added in v0.23.5 

func Strcasestr(str1, str2 *byte) *byte

Strcasestr - function is similar to Strstr(), but ignores the case of both strings.

func Strcat added in v0.19.5 

func Strcat(dest, src *byte) *byte

Strcat - concatenate strings Appends a copy of the source string to the destination string. The terminating null character in destination is overwritten by the first character of source, and a null-character is included at the end of the new string formed by the concatenation of both in destination.

func Strchr added in v0.21.6 

func Strchr(str *byte, ch int32) *byte

Strchr - Locate first occurrence of character in string See: http://www.cplusplus.com/reference/cstring/strchr/

func Strcmp added in v0.20.3 

func Strcmp(str1, str2 *byte) int32

Strcmp - compare two strings Compares the C string str1 to the C string str2.

func Strcpy added in v0.19.3 

func Strcpy(dest, src *byte) *byte

Strcpy copies the C string pointed by source into the array pointed by destination, including the terminating null character (and stopping at that point).

To avoid overflows, the size of the array pointed by destination shall be long enough to contain the same C string as source (including the terminating null character), and should not overlap in memory with source.

func Strerror added in v0.24.0 

func Strerror(errno int32) *byte

Strerror translates an errno error code into an error message.

func StringToCString added in v0.16.0 

func StringToCString(s string) *byte

StringToCString returns the C string (also known as a null terminated string) to be as used as a string in C.

func Strlen added in v0.11.0 

func Strlen(a *byte) int32

Strlen returns the length of a string.

The length of a C string is determined by the terminating null-character: A C string is as long as the number of characters between the beginning of the string and the terminating null character (without including the terminating null character itself).

func Strncmp added in v0.23.3 

func Strncmp(str1, str2 *byte, n int32) int32

Strncmp - compare two strings Compares the C string str1 to the C string str2 upto the first NULL character or n-th character whichever comes first.

func Strncpy added in v0.19.3 

func Strncpy(dest, src *byte, len int32) *byte

Strncpy copies the first num characters of source to destination. If the end of the source C string (which is signaled by a null-character) is found before num characters have been copied, destination is padded with zeros until a total of num characters have been written to it.

No null-character is implicitly appended at the end of destination if source is longer than num. Thus, in this case, destination shall not be considered a null terminated C string (reading it as such would overflow).

destination and source shall not overlap (see memmove for a safer alternative when overlapping).

func Strstr added in v0.23.5 

func Strstr(str1, str2 *byte) *byte

Strstr - locate a substring in a string function locates the first occurrence of the null-terminated string needle in the null-terminated string haystack.

func Strtod added in v0.16.0 

func Strtod(str *byte, endptr **byte) float64

Strtod parses the C-string str interpreting its content as a floating point number (according to the current locale) and returns its value as a double. If endptr is not a null pointer, the function also sets the value of endptr to point to the first character after the number.

The function first discards as many whitespace characters (as in isspace) as necessary until the first non-whitespace character is found. Then, starting from this character, takes as many characters as possible that are valid following a syntax resembling that of floating point literals (see below), and interprets them as a numerical value. A pointer to the rest of the string after the last valid character is stored in the object pointed by endptr.

func Strtof added in v0.16.0 

func Strtof(str *byte, endptr **byte) float32

Strtof works the same way as Strtod but returns a float.

func Strtol added in v0.9.0 

func Strtol(str *byte, endptr **byte, radix int32) int32

Strtol parses the C-string str interpreting its content as an integral number of the specified base, which is returned as a long int value. If endptr is not a null pointer, the function also sets the value of endptr to point to the first character after the number.

The function first discards as many whitespace characters as necessary until the first non-whitespace character is found. Then, starting from this character, takes as many characters as possible that are valid following a syntax that depends on the base parameter, and interprets them as a numerical value. Finally, a pointer to the first character following the integer representation in str is stored in the object pointed by endptr.

If the value of base is zero, the syntax expected is similar to that of integer constants, which is formed by a succession of:

  • An optional sign character (+ or -)
  • An optional prefix indicating octal or hexadecimal base ("0" or "0x"/"0X" respectively)

A sequence of decimal digits (if no base prefix was specified) or either octal or hexadecimal digits if a specific prefix is present

If the base value is between 2 and 36, the format expected for the integral number is a succession of any of the valid digits and/or letters needed to represent integers of the specified radix (starting from '0' and up to 'z'/'Z' for radix 36). The sequence may optionally be preceded by a sign (either + or -) and, if base is 16, an optional "0x" or "0X" prefix.

If the first sequence of non-whitespace characters in str is not a valid integral number as defined above, or if no such sequence exists because either str is empty or it contains only whitespace characters, no conversion is performed.

For locales other than the "C" locale, additional subject sequence forms may be accepted.

func Strtold added in v0.16.0 

func Strtold(str *byte, endptr **byte) float64

Strtold works the same way as Strtod but returns a long double.

func Strtoll added in v0.16.0 

func Strtoll(str *byte, endptr **byte, radix int32) int64

Strtoll works the same way as Strtol but returns a long long.

func Strtoul added in v0.16.0 

func Strtoul(str *byte, endptr **byte, radix int32) uint32

Strtoul works the same way as Strtol but returns a long unsigned int.

func Strtoull added in v0.16.0 

func Strtoull(str *byte, endptr **byte, radix int32) uint64

Strtoull works the same way as Strtol but returns a long long unsigned int.

func Syslog added in v0.22.2 

func Syslog(priority int32, format *byte, args ...interface{})

void syslog(int, const char *, ...);

func Ternary 

func Ternary(a bool, b, c func() interface{}) interface{}

Ternary simulates the ternary (also known as the conditional operator). Go does not have the equivalent of using if statements as expressions or inline if statements. This function takes the true and false parts as closures to be sure that only the true or false condition is evaulated - to prevent side effects.

func TimeTToFloat64 added in v0.16.7 

func TimeTToFloat64(t TimeT) float64

TimeTToFloat64 converts TimeT to a float64. It is used by the tests.

func Tmpnam added in v0.11.0 

func Tmpnam(str *byte) *byte

Tmpnam handles tmpnam().

Returns a string containing a file name different from the name of any existing file, and thus suitable to safely create a temporary file without risking to overwrite an existing file.

If str is a null pointer, the resulting string is stored in an internal static array that can be accessed by the return value. The content of this string is preserved at least until a subsequent call to this same function, which may overwrite it.

If str is not a null pointer, it shall point to an array of at least L_tmpnam characters that will be filled with the proposed temporary file name.

The file name returned by this function can be used to create a regular file using fopen to be used as a temporary file. The file created this way, unlike those created with tmpfile is not automatically deleted when closed; A program shall call remove to delete this file once closed.

func UnsafeSliceToSlice added in v0.22.4 

func UnsafeSliceToSlice(a interface{}, fromSize int32, toSize int32) *reflect.SliceHeader

UnsafeSliceToSlice takes a slice and transforms it into a slice of a different type. For this we need to adjust the length and capacity in accordance with the sizes of the underlying types.

func UnsafeSliceToSliceUnlimited added in v0.24.3 

func UnsafeSliceToSliceUnlimited(a interface{}) *reflect.SliceHeader

UnsafeSliceToSliceUnlimited takes a slice and transforms it into a slice of a different type. The length and capacity will be set to unlimited.

func Vsnprintf added in v0.20.0 

func Vsnprintf(buffer *byte, n int32, format *byte, args VaList) int32

Vsnprintf handles vsnprintf().

Writes the C string pointed by format to the standard output (stdout). If format includes format specifiers (subsequences beginning with %), the additional arguments following format are formatted and inserted in the resulting string replacing their respective specifiers.

func Vsprintf added in v0.20.0 

func Vsprintf(buffer, format *byte, args VaList) int32

Vsprintf handles vsprintf().

Writes the C string pointed by format to the standard output (stdout). If format includes format specifiers (subsequences beginning with %), the additional arguments following format are formatted and inserted in the resulting string replacing their respective specifiers.

func Vsyslog added in v0.22.2 

func Vsyslog(priority int32, format *byte, args VaList)

void vsyslog(int, const char *, struct __va_list_tag *);

Types

type DivT added in v0.16.0 

type DivT struct {
	Quot int32 // quotient
	Rem  int32 // remainder
}

DivT is the representation of "div_t". It is used by div().

func Div added in v0.16.0 

func Div(numer, denom int32) DivT

Div returns the integral quotient and remainder of the division of numer by denom ( numer/denom ) as a structure of type div_t, ldiv_t or lldiv_t, which has two members: quot and rem.

type File added in v0.11.0 

type File struct {
	// This is not part of the original struct but it is needed for internal
	// calls in Go.
	OsFile *os.File
	// contains filtered or unexported fields
}

File represents the definition has been translated from the original definition for __sFILE, which is an alias for FILE. Not all of the attributes have been translated. They should be turned on as needed.

func Fopen added in v0.9.0 

func Fopen(filePath, mode *byte) *File

Fopen handles fopen().

Opens the file whose name is specified in the parameter filePath and associates it with a stream that can be identified in future operations by the File pointer returned.

The operations that are allowed on the stream and how these are performed are defined by the mode parameter.

The returned pointer can be disassociated from the file by calling fclose() or freopen(). All opened files are automatically closed on normal program termination.

func NewFile added in v0.11.0 

func NewFile(f *os.File) *File

NewFile creates a File pointer from a Go file pointer.

func Tmpfile added in v0.11.0 

func Tmpfile() *File

Tmpfile handles tmpfile().

Creates a temporary binary file, open for update ("wb+" mode, see fopen for details) with a filename guaranteed to be different from any other existing file.

The temporary file created is automatically deleted when the stream is closed (fclose) or when the program terminates normally. If the program terminates abnormally, whether the file is deleted depends on the specific system and library implementation.

type InterfaceWrapper added in v0.25.0 

type InterfaceWrapper struct {
	X interface{}
}

InterfaceWrapper is used for those case where we cannot use unsafe.Pointer the default catch all data type for c2go. For the moment this is the case for function pointers.

type LdivT added in v0.16.0 

type LdivT struct {
	Quot int32 // quotient
	Rem  int32 // remainder
}

LdivT is the representation of "ldiv_t". It is used by ldiv().

func Ldiv added in v0.16.0 

func Ldiv(numer, denom int32) LdivT

Ldiv returns the integral quotient and remainder of the division of numer by denom ( numer/denom ) as a structure of type ldiv_t, which has two members: quot and rem.

type LldivT added in v0.16.0 

type LldivT struct {
	Quot int64 // quotient
	Rem  int64 // remainder
}

LldivT is the representation of "lldiv_t". It is used by lldiv().

func Lldiv added in v0.16.0 

func Lldiv(numer, denom int64) LldivT

Lldiv returns the integral quotient and remainder of the division of numer by denom ( numer/denom ) as a structure of type lldiv_t, which has two members: quot and rem.

type Safe added in v0.24.0 

type Safe struct {
	// contains filtered or unexported fields
}

Safe contains a thread-safe value

func NewSafe added in v0.24.0 

func NewSafe(value interface{}) *Safe

NewSafe create a new Safe instance given a value

func (*Safe) Get added in v0.24.0 

func (s *Safe) Get() interface{}

Get returns the value

func (*Safe) Set added in v0.24.0 

func (s *Safe) Set(value interface{})

Set sets a new value

type TimeT added in v0.16.7 

type TimeT int32

TimeT is the representation of "time_t". For historical reasons, it is generally implemented as an integral value representing the number of seconds elapsed since 00:00 hours, Jan 1, 1970 UTC (i.e., a unix timestamp). Although libraries may implement this type using alternative time representations.

func IntToTimeT added in v0.16.7 

func IntToTimeT(t int32) TimeT

IntToTimeT converts an int32 to a TimeT.

func Mktime added in v0.21.8 

func Mktime(tm *Tm) TimeT

Mktime - Convert tm structure to time_t Returns the value of type time_t that represents the local time described by the tm structure pointed by timeptr (which may be modified).

func NullToTimeT added in v0.16.7 

func NullToTimeT(i int32) *TimeT

NullToTimeT converts a NULL to an array of TimeT.

func Time added in v0.16.7 

func Time(tloc *TimeT) TimeT

Time returns the current time.

type Tm added in v0.21.8 

type Tm struct {
	Tm_sec   int32
	Tm_min   int32
	Tm_hour  int32
	Tm_mday  int32
	Tm_mon   int32
	Tm_year  int32
	Tm_wday  int32
	Tm_yday  int32
	Tm_isdst int32
}

Tm - base struct in "time.h" Structure containing a calendar date and time broken down into its components

func Gmtime added in v0.21.8 

func Gmtime(timer *TimeT) (tm *Tm)

Gmtime - Convert time_t to tm as UTC time

func LocalTime added in v0.21.8 

func LocalTime(timer *TimeT) (tm *Tm)

Localtime - Convert time_t to tm as local time Uses the value pointed by timer to fill a tm structure with the values that represent the corresponding time, expressed for the local timezone.

type VaList added in v0.22.0 

type VaList struct {
	Pos  int
	Args []interface{}
}

Source Files

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