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comparison basedfilelib.h @ 2:1b0ebe86b44c

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Automated Vimcurial commmit
author VilyaemKenyaz
date Fri, 08 Sep 2023 07:54:05 -0400
parents
children 8fe0b5711413
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1:47e1b1039d7b 2:1b0ebe86b44c
1 // Based File Library
2 //
3 // Makes File I/O two functions, more like TempleOS, instead of *nix.
4
5 #define MAX_LINES 100000
6 #define MAXLENGTH 512
7
8 char* ReadFile(const char* fileName) {
9 FILE* file = fopen(fileName, "rb");
10 if (file == NULL) {
11 perror("Error opening file");
12 return NULL;
13 }
14
15 fseek(file, 0, SEEK_END);
16 long fileSize = ftell(file);
17 rewind(file);
18
19 char* fileContent = (char*)malloc(fileSize * sizeof(char));
20 if (fileContent == NULL) {
21 perror("Error allocating memory for file content");
22 fclose(file);
23 return NULL;
24 }
25
26 size_t readSize = fread(fileContent, sizeof(char), fileSize, file);
27 if (readSize != fileSize) {
28 perror("Error reading file");
29 fclose(file);
30 free(fileContent);
31 return NULL;
32 }
33
34 fclose(file);
35 return fileContent;
36 }
37
38 void WriteFile(const char* fileName, const char* content) {
39 FILE* file = fopen(fileName, "wb");
40 if (file == NULL) {
41 perror("Error opening file");
42 }
43
44 size_t writeSize = fwrite(content, sizeof(char), strlen(content), file);
45 if (writeSize != strlen(content)) {
46 perror("Error writing to file");
47 fclose(file);
48 }
49
50 fclose(file);
51 }
52
53
54 char* DeleteLine(char* str, unsigned int line_number) {
55 char* lines[MAX_LINES];
56 char* line;
57 unsigned int current_line = 0;
58
59 line = strtok(str, "\n");
60 while (line != NULL && current_line < MAX_LINES) {
61 lines[current_line++] = line;
62 line = strtok(NULL, "\n");
63 }
64
65 // Delete the specified line
66 if (line_number > 0 && line_number <= current_line) {
67 for (unsigned int i = line_number - 1; i < current_line - 1; i++) {
68 lines[i] = lines[i + 1];
69 }
70 current_line--;
71 }
72
73 // Reconstruct the string with remaining lines
74 str[0] = '\0';
75 for (unsigned int i = 0; i < current_line; i++) {
76 strcat(str, lines[i]);
77 strcat(str, "\n");
78 }
79
80 return str;
81 }
82
83
84
85 char* ReadLine(const char *str, unsigned int lineNum) {
86 int currentLine = 1;
87 size_t strLen = strlen(str);
88 char *line = NULL;
89
90 line = malloc(strLen + 1);
91 if (line == NULL) {
92 fprintf(stderr, "Error: memory allocation failed.\n");
93 exit(1);
94 }
95
96 int lineStartIndex = 0;
97 int lineEndIndex = 0;
98
99 // Traverse through the string until the desired line or the end of the string
100 while (currentLine <= lineNum && lineEndIndex < strLen) {
101 // Find the start index of the current line
102 while (lineStartIndex < strLen && (str[lineStartIndex] == '\n' || str[lineStartIndex] == '\r')) {
103 lineStartIndex++;
104 lineEndIndex++;
105 }
106
107 // Find the end index of the current line
108 lineEndIndex = lineStartIndex;
109 while (lineEndIndex < strLen && str[lineEndIndex] != '\n' && str[lineEndIndex] != '\r') {
110 lineEndIndex++;
111 }
112
113 // Check if the desired line is found
114 if (currentLine == lineNum) {
115 // Copy the line to the allocated memory
116 strncpy(line, str + lineStartIndex, lineEndIndex - lineStartIndex);
117 line[lineEndIndex - lineStartIndex] = '\0';
118 break;
119 }
120
121 // Move to the start of the next line
122 currentLine++;
123 lineStartIndex = lineEndIndex;
124 }
125
126 return line;
127 }
128
129 //BasedFileLib