Data commit

This commit is contained in:
Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
199093 changed files with 3378972 additions and 0 deletions

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#define TITLE "CSV data manipulation"
#define URL "http://rosettacode.org/wiki/CSV_data_manipulation"
#define _GNU_SOURCE
#define bool int
#include <stdio.h>
#include <stdlib.h> /* malloc...*/
#include <string.h> /* strtok...*/
#include <ctype.h>
#include <errno.h>
/**
* How to read a CSV file ?
*/
typedef struct {
char * delim;
unsigned int rows;
unsigned int cols;
char ** table;
} CSV;
/**
* Utility function to trim whitespaces from left & right of a string
*/
int trim(char ** str) {
int trimmed;
int n;
int len;
len = strlen(*str);
n = len - 1;
/* from right */
while((n>=0) && isspace((*str)[n])) {
(*str)[n] = '\0';
trimmed += 1;
n--;
}
/* from left */
n = 0;
while((n < len) && (isspace((*str)[0]))) {
(*str)[0] = '\0';
*str = (*str)+1;
trimmed += 1;
n++;
}
return trimmed;
}
/**
* De-allocate csv structure
*/
int csv_destroy(CSV * csv) {
if (csv == NULL) { return 0; }
if (csv->table != NULL) { free(csv->table); }
if (csv->delim != NULL) { free(csv->delim); }
free(csv);
return 0;
}
/**
* Allocate memory for a CSV structure
*/
CSV * csv_create(unsigned int cols, unsigned int rows) {
CSV * csv;
csv = malloc(sizeof(CSV));
csv->rows = rows;
csv->cols = cols;
csv->delim = strdup(",");
csv->table = malloc(sizeof(char *) * cols * rows);
if (csv->table == NULL) { goto error; }
memset(csv->table, 0, sizeof(char *) * cols * rows);
return csv;
error:
csv_destroy(csv);
return NULL;
}
/**
* Get value in CSV table at COL, ROW
*/
char * csv_get(CSV * csv, unsigned int col, unsigned int row) {
unsigned int idx;
idx = col + (row * csv->cols);
return csv->table[idx];
}
/**
* Set value in CSV table at COL, ROW
*/
int csv_set(CSV * csv, unsigned int col, unsigned int row, char * value) {
unsigned int idx;
idx = col + (row * csv->cols);
csv->table[idx] = value;
return 0;
}
void csv_display(CSV * csv) {
int row, col;
char * content;
if ((csv->rows == 0) || (csv->cols==0)) {
printf("[Empty table]\n");
return ;
}
printf("\n[Table cols=%d rows=%d]\n", csv->cols, csv->rows);
for (row=0; row<csv->rows; row++) {
printf("[|");
for (col=0; col<csv->cols; col++) {
content = csv_get(csv, col, row);
printf("%s\t|", content);
}
printf("]\n");
}
printf("\n");
}
/**
* Resize CSV table
*/
int csv_resize(CSV * old_csv, unsigned int new_cols, unsigned int new_rows) {
unsigned int cur_col,
cur_row,
max_cols,
max_rows;
CSV * new_csv;
char * content;
bool in_old, in_new;
/* Build a new (fake) csv */
new_csv = csv_create(new_cols, new_rows);
if (new_csv == NULL) { goto error; }
new_csv->rows = new_rows;
new_csv->cols = new_cols;
max_cols = (new_cols > old_csv->cols)? new_cols : old_csv->cols;
max_rows = (new_rows > old_csv->rows)? new_rows : old_csv->rows;
for (cur_col=0; cur_col<max_cols; cur_col++) {
for (cur_row=0; cur_row<max_rows; cur_row++) {
in_old = (cur_col < old_csv->cols) && (cur_row < old_csv->rows);
in_new = (cur_col < new_csv->cols) && (cur_row < new_csv->rows);
if (in_old && in_new) {
/* re-link data */
content = csv_get(old_csv, cur_col, cur_row);
csv_set(new_csv, cur_col, cur_row, content);
} else if (in_old) {
/* destroy data */
content = csv_get(old_csv, cur_col, cur_row);
free(content);
} else { /* skip */ }
}
}
/* on rows */
free(old_csv->table);
old_csv->rows = new_rows;
old_csv->cols = new_cols;
old_csv->table = new_csv->table;
new_csv->table = NULL;
csv_destroy(new_csv);
return 0;
error:
printf("Unable to resize CSV table: error %d - %s\n", errno, strerror(errno));
return -1;
}
/**
* Open CSV file and load its content into provided CSV structure
**/
int csv_open(CSV * csv, char * filename) {
FILE * fp;
unsigned int m_rows;
unsigned int m_cols, cols;
char line[2048];
char * lineptr;
char * token;
fp = fopen(filename, "r");
if (fp == NULL) { goto error; }
m_rows = 0;
m_cols = 0;
while(fgets(line, sizeof(line), fp) != NULL) {
m_rows += 1;
cols = 0;
lineptr = line;
while ((token = strtok(lineptr, csv->delim)) != NULL) {
lineptr = NULL;
trim(&token);
cols += 1;
if (cols > m_cols) { m_cols = cols; }
csv_resize(csv, m_cols, m_rows);
csv_set(csv, cols-1, m_rows-1, strdup(token));
}
}
fclose(fp);
csv->rows = m_rows;
csv->cols = m_cols;
return 0;
error:
fclose(fp);
printf("Unable to open %s for reading.", filename);
return -1;
}
/**
* Open CSV file and save CSV structure content into it
**/
int csv_save(CSV * csv, char * filename) {
FILE * fp;
int row, col;
char * content;
fp = fopen(filename, "w");
for (row=0; row<csv->rows; row++) {
for (col=0; col<csv->cols; col++) {
content = csv_get(csv, col, row);
fprintf(fp, "%s%s", content,
((col == csv->cols-1) ? "" : csv->delim) );
}
fprintf(fp, "\n");
}
fclose(fp);
return 0;
}
/**
* Test
*/
int main(int argc, char ** argv) {
CSV * csv;
printf("%s\n%s\n\n",TITLE, URL);
csv = csv_create(0, 0);
csv_open(csv, "fixtures/csv-data-manipulation.csv");
csv_display(csv);
csv_set(csv, 0, 0, "Column0");
csv_set(csv, 1, 1, "100");
csv_set(csv, 2, 2, "200");
csv_set(csv, 3, 3, "300");
csv_set(csv, 4, 4, "400");
csv_display(csv);
csv_save(csv, "tmp/csv-data-manipulation.result.csv");
csv_destroy(csv);
return 0;
}

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#include <gadget/gadget.h>
LIB_GADGET_START
void Muestra_archivo_original();
Main
if(Exist_file("load_matrix.txt"))
{
/* recupero informacion del archivo para su apertura segura */
F_STAT dataFile = Stat_file("load_matrix.txt");
if(dataFile.is_matrix) // tiene forma de matriz???
{
New multitype test;
/* establezco los rangos a leer */
Range for test [0:1:dataFile.total_lines-1, 0:1:dataFile.max_tokens_per_line-1];
/* cargamos el array con detección de enteros como LONG */
test = Load_matrix_mt( pSDS(test), "load_matrix.txt", dataFile, DET_LONG);
/* modifica algunas cosas del archivo */
/* sChg() no es necesario aquí, porque no se está cambiando el tipo
de la celda, sino que se reemplaza el string: */
///sChg( test, 0,1, "Columna 1");
/* Con Let() basta... */
Let( $s-test[0,1], "Columna 1");
$l-test[2,1] = 1000;
$l-test[2,2] = 2000;
/* inserto filas */
/* preparo la fila a insertar */
New multitype nueva_fila;
sAppend_mt(nueva_fila,"fila 3.1");
Append_mt(nueva_fila,float,0.0);
Append_mt(nueva_fila,int,0);
Append_mt(nueva_fila,double,0.0);
Append_mt(nueva_fila,long, 0L);
/* insertamos la misma fila en el array, 3 veces */
test = Insert_row_mt(pSDS(test),pSDS(nueva_fila), 4);
test = Insert_row_mt(pSDS(test),pSDS(nueva_fila), 4);
test = Insert_row_mt(pSDS(test),pSDS(nueva_fila), 4);
Free multitype nueva_fila;
Print "\nGuardando archivo en \"save_matrix.txt\"...\n";
DEC_PREC = 20; /* establece precision decimal para despliegue */
All range for test;
Save_matrix_mt(SDS(test), "save_matrix.txt" );
Free multitype test;
Print "\nArchivo original:\n";
Muestra_archivo_original();
}
}
End
void Muestra_archivo_original(){
String csys;
csys = `cat load_matrix.txt`;
Print "\n%s\n", csys;
Free secure csys;
}