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added file read write

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This commit is contained in:
Bogdan Pilyugin 2024-03-13 13:47:42 +02:00
parent 086e919e23
commit 8f5537fd6a
1 changed files with 81 additions and 5 deletions
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86
src/RawMemAPI.c
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@ -38,6 +38,11 @@
}
*/
#define READ_ORERATION 1
#define DELETE_ORERATION 2
#define APPEND_ORERATION 3
#define REPLACE_ORERATION 4
static const char *dirpath = "/data/";
#define MEM_OBLECT_MAX_LENGTH 32
@ -115,8 +120,7 @@ void RawDataHandler(char *argres, int rw)
snprintf(argres, VAR_MAX_VALUE_LENGTH, "\"ERROR:key 'size' not found\"");
return;
}
ESP_LOGI(TAG, "Got memory object %s, with offest %d and size %d", mem_object, offset, size);
//ESP_LOGI(TAG, "Got memory object %s, with offest %d and size %d", mem_object, offset, size);
strcpy(filepath, dirpath);
strcat(filepath, mem_object);
@ -128,11 +132,83 @@ void RawDataHandler(char *argres, int rw)
return;
}
FILE *f = fopen(filepath, "r");
if (f == NULL)
if (operation == DELETE_ORERATION)
{
ESP_LOGE(TAG, "Failed to open file %s for writing", mem_object);
unlink(filepath);
snprintf(argres, VAR_MAX_VALUE_LENGTH, "\"DELETED OK\"");
return;
}
else if (operation == READ_ORERATION)
{
FILE *f = fopen(filepath, "r");
if (f == NULL)
{
ESP_LOGE(TAG, "Failed to open file %s for writing", mem_object);
return;
}
char *dat = (char*) malloc(size + 1);
if (dat == NULL)
{
snprintf(argres, VAR_MAX_VALUE_LENGTH, "\"ERROR: no memory to handle request\"");
return;
}
fseek(f, offset, SEEK_SET);
int read = fread(dat, 1, size, f);
dat[read] = 0x00;
fclose(f);
struct jWriteControl jwc;
jwOpen(&jwc, argres, VAR_MAX_VALUE_LENGTH, JW_OBJECT, JW_COMPACT);
jwObj_int(&jwc, "operation", operation);
jwObj_string(&jwc, "mem_object", mem_object);
jwObj_int(&jwc, "offset", offset);
jwObj_int(&jwc, "size", read);
jwObj_string(&jwc, "dat", dat);
jwClose(&jwc);
free(dat);
}
else if (operation == APPEND_ORERATION || operation == REPLACE_ORERATION)
{
jRead(argres, "{'dat'", &result);
if (result.elements == 1)
{
if (result.bytelen > 0 && result.bytelen <= size)
{
//memcpy(mem_object, (char*) result.pValue, result.bytelen);
//mem_object[result.bytelen] = 0x00;
if (operation == REPLACE_ORERATION)
FILE *f = fopen(filepath, "w");
else if (operation == APPEND_ORERATION)
FILE *f = fopen(filepath, "a");
if (f == NULL)
{
ESP_LOGE(TAG, "Failed to open file %s for writing", mem_object);
return;
}
fseek(f, offset, SEEK_SET);
int write = fwrite((char*) result.pValue, result.bytelen, 1, f);
struct jWriteControl jwc;
jwOpen(&jwc, argres, VAR_MAX_VALUE_LENGTH, JW_OBJECT, JW_COMPACT);
jwObj_int(&jwc, "operation", operation);
jwObj_string(&jwc, "mem_object", mem_object);
jwObj_int(&jwc, "offset", offset);
jwObj_int(&jwc, "size", write);
jwClose(&jwc);
}
else
{
snprintf(argres, VAR_MAX_VALUE_LENGTH, "\"ERROR:'dat' length out of range\"");
return;
}
}
else
{
snprintf(argres, VAR_MAX_VALUE_LENGTH, "\"ERROR:key 'dat' not found\"");
return;
}
}
}