forked from MockbaTheBorg/RunCPM
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge branch 'MockbaTheBorg:master' into streamio
- Loading branch information
Showing
5 changed files
with
179 additions
and
11 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| /* | ||
| gensub - Generates a $$$.SUB file from a text file passed as argument and saves it to a destination also passed as argument. | ||
| Usage: gensub <source> <destination> | ||
| */ | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <string.h> | ||
|
|
||
| #define BUFSIZE 128 | ||
|
|
||
| int main(int argc, char* argv[]) { | ||
| // Check if the user passed a file as argument | ||
| if (argc < 2) { | ||
| printf("Usage: %s <filename> <destination>\n", argv[0]); | ||
| return 1; | ||
| } | ||
|
|
||
| // Check if the user passed a destination as argument | ||
| if (argc < 3) { | ||
| printf("Usage: %s <filename> <destination>\n", argv[0]); | ||
| return 1; | ||
| } | ||
|
|
||
| // Open the input file | ||
| FILE* file = fopen(argv[1], "r"); | ||
| if (file == NULL) { | ||
| printf("Error: Could not open input file %s\n", argv[1]); | ||
| return 1; | ||
| } | ||
| // Count the number of lines in the file | ||
| int lines = 0; | ||
| char buffer[BUFSIZE]; | ||
| while (fgets(buffer, sizeof(buffer), file) != NULL) { | ||
| lines++; | ||
| } | ||
| // Reset the file pointer | ||
| fseek(file, 0, SEEK_SET); | ||
|
|
||
| // Check if the file is empty | ||
| if (lines == 0) { | ||
| printf("Error: File is empty\n"); | ||
| fclose(file); | ||
| return 1; | ||
| } | ||
|
|
||
| // Allocate 128 bytes for each axisting line | ||
| char* subfile = (char*)malloc(lines * 128); | ||
| if (subfile == NULL) { | ||
| printf("Error: Could not allocate memory\n"); | ||
| fclose(file); | ||
| return 1; | ||
| } | ||
|
|
||
| // Read the file line by line and copy it to the subfile buffer in reverse order of 128 byte blocks | ||
| int offset = (lines - 1) * 128; | ||
| while (fgets(buffer, sizeof(buffer), file) != NULL) { | ||
| int len = strlen(buffer); | ||
| if (len > 0) { | ||
| if (buffer[len - 1] == '\n') { | ||
| buffer[len - 1] = '\0'; | ||
| len--; | ||
| } | ||
| } | ||
| if (len > 0) { | ||
| if (buffer[len - 1] == '\r') { | ||
| buffer[len - 1] = '\0'; | ||
| len--; | ||
| } | ||
| } | ||
| subfile[offset] = len; | ||
| memcpy(subfile + offset + 1, buffer, len); | ||
| offset -= 128; | ||
| } | ||
|
|
||
| // Close the input file | ||
| fclose(file); | ||
|
|
||
| // Write the subfile buffer to the destination file | ||
| FILE* dest = fopen(argv[2], "w"); | ||
| if (dest == NULL) { | ||
| printf("Error: Could not open output file %s\n", argv[2]); | ||
| free(subfile); | ||
| return 1; | ||
| } | ||
|
|
||
| // Write the subfile buffer to the destination file | ||
| fwrite(subfile, 1, lines * 128, dest); | ||
|
|
||
| // Close the destination file | ||
| fclose(dest); | ||
|
|
||
| } |