e977f325ae
git-svn-id: http://picoc.googlecode.com/svn/trunk@461 21eae674-98b7-11dd-bd71-f92a316d2d60
114 lines
2.5 KiB
C
114 lines
2.5 KiB
C
#include "../picoc.h"
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#ifdef USE_READLINE
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#include <readline/readline.h>
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#include <readline/history.h>
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#endif
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/* a source file we need to clean up */
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static char *CleanupText = NULL;
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/* deallocate any storage */
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void PlatformCleanup()
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{
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if (CleanupText != NULL)
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free(CleanupText);
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}
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/* get a line of interactive input */
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char *PlatformGetLine(char *Buf, int MaxLen, const char *Prompt)
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{
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#ifdef USE_READLINE
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if (Prompt != NULL)
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{
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/* use GNU readline to read the line */
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char *InLine = readline(Prompt);
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if (InLine == NULL)
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return NULL;
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Buf[MaxLen] = '\0';
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strncpy(Buf, InLine, MaxLen-1);
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strncat(Buf, "\n", MaxLen-1);
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if (InLine[0] != '\0')
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add_history(InLine);
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free(InLine);
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return Buf;
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}
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#endif
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if (Prompt != NULL)
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printf("%s", Prompt);
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fflush(stdout);
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return fgets(Buf, MaxLen, stdin);
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}
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/* get a character of interactive input */
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int PlatformGetCharacter()
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{
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fflush(stdout);
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return getchar();
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}
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/* write a character to the console */
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void PlatformPutc(unsigned char OutCh, union OutputStreamInfo *Stream)
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{
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putchar(OutCh);
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}
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/* read a file into memory */
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char *PlatformReadFile(const char *FileName)
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{
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struct stat FileInfo;
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char *ReadText;
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FILE *InFile;
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int BytesRead;
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if (stat(FileName, &FileInfo))
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ProgramFail(NULL, "can't read file %s\n", FileName);
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ReadText = malloc(FileInfo.st_size + 1);
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if (ReadText == NULL)
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ProgramFail(NULL, "out of memory\n");
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InFile = fopen(FileName, "r");
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if (InFile == NULL)
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ProgramFail(NULL, "can't read file %s\n", FileName);
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BytesRead = fread(ReadText, 1, FileInfo.st_size, InFile);
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if (BytesRead == 0)
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ProgramFail(NULL, "can't read file %s\n", FileName);
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ReadText[BytesRead] = '\0';
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fclose(InFile);
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return ReadText;
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}
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/* read and scan a file for definitions */
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void PlatformScanFile(const char *FileName)
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{
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char *SourceStr = PlatformReadFile(FileName);
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char *OrigCleanupText = CleanupText;
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if (CleanupText == NULL)
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CleanupText = SourceStr;
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Parse(FileName, SourceStr, strlen(SourceStr), TRUE);
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free(SourceStr);
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if (OrigCleanupText == NULL)
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CleanupText = NULL;
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}
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/* mark where to end the program for platforms which require this */
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jmp_buf ExitBuf;
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/* exit the program */
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void PlatformExit()
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{
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longjmp(ExitBuf, 1);
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}
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