| 50 | ****************************************************************************/ |
| 51 | |
| 52 | int main(int argc, char **argv) |
| 53 | { |
| 54 | FILE *instream; |
| 55 | FILE *outstream; |
| 56 | int len; |
| 57 | int ret = 1; |
| 58 | |
| 59 | if (argc != 3) |
| 60 | { |
| 61 | fprintf(stderr, "ERROR: Two arguments expected\n"); |
| 62 | return 1; |
| 63 | } |
| 64 | |
| 65 | /* Open the source file read-only */ |
| 66 | |
| 67 | instream = fopen(argv[1], "r"); |
| 68 | if (instream == NULL) |
| 69 | { |
| 70 | fprintf(stderr, "ERROR: Failed to open %s for reading\n", argv[1]); |
| 71 | return 1; |
| 72 | } |
| 73 | |
| 74 | /* Open the destination file write-only */ |
| 75 | |
| 76 | outstream = fopen(argv[2], "w"); |
| 77 | if (outstream == NULL) |
| 78 | { |
| 79 | fprintf(stderr, "ERROR: Failed to open %s for reading\n", argv[2]); |
| 80 | goto errout_with_instream; |
| 81 | } |
| 82 | |
| 83 | /* Process each line in the file */ |
| 84 | |
| 85 | while ((fgets(g_line, LINESIZE, instream) != NULL)) |
| 86 | { |
| 87 | /* Remove all whitespace (including newline) from the end of the line */ |
| 88 | |
| 89 | len = strlen(g_line) - 1; |
| 90 | while (len >= 0 && isspace(g_line[len])) |
| 91 | { |
| 92 | len--; |
| 93 | } |
| 94 | |
| 95 | /* Put the newline back. len is either -1, or points to the last, non- |
| 96 | * space character in the line. |
| 97 | */ |
| 98 | |
| 99 | g_line[len + 1] = '\n'; |
| 100 | g_line[len + 2] = '\0'; |
| 101 | fputs(g_line, outstream); |
| 102 | } |
| 103 | |
| 104 | ret = 0; |
| 105 | fclose(outstream); |
| 106 | |
| 107 | errout_with_instream: |
| 108 | fclose(instream); |
| 109 | return ret; |